VirtualBox

[B]Virtualbox - 3.1.2
[/B]
http://www.virtualbox.org/

Documentation: http://www.virtualbox.org/wiki/Documentation.

Changelog - This is a maintenance release. The following items were fixed and/or added: http://www.virtualbox.org/wiki/Changelog.

Requirements:
REQUIREMENTS
Mac OS X 10.4 or later.

grazie:)

[B]VirtualBox - 3.1.4[/B]

What's new in this version:
VMM: SMP stability fixes
VMM: fixed guru meditation in certain rare cases [bug #5968]
VMM: activate NXE for PAE enabled guests [VT-x and AMD-V on 32 bits hosts only; bug #3578]
VMM: added workaround for broken BIOSes that make VirtualBox think AMD-V is in use (for details see bug #5639)
VMM: fixed rare host reboot when restoring a saved state (bug #3945)
VMM: fixed incompatibility with 2.6.32 Linux kernels (software virtualization only; bug #6100)
VMM: turn on nested paging by default for new VMs (if available; VT-x and AMD-V only)
VMM: turn on VPID by default for new VMs (if available; VT-x only)
VMM: perform strict CPUID compatibility checks when teleporting; to get the old behavior set "VBoxInternal/CPUM/StrictCpuIdChecks" to 0
VMM: fixed VM crash with certain 16 bits Windows applications (software virtualization only; bug #5399)
Snapshots: fixed a 3.1 regression that broke deletion of snapshots when a machine had immutable or writethrough storage attached (bug #5727)
Saved state: fixed VERR_SSM_LOADED_TOO_MUCH error when loading DisplayScreenshot(bug #6162)
VBoxManage: add restorecurrent operation to snapshots command
VBoxManage: fixed broken snapshot lookup by name (bug #6070
GUI: fixed the broken "Reload" button that reloads the machine XML when a machine is inaccessible
GUI: fixed guest fullscreen mode after reboot (bug #5372)
GUI: handle Ctrl+Break properly on X11 hosts (bug #6122)
GUI: fixed status LEDs for storage devices
GUI: workaround for disabling the seamless mode on KDE hosts (KWin bug)
3D support: fixed SELinux warning saying VBoxOGL.so requires text relocation (bug #5690)
3D support: fixed Corrupted surface rendering (bug #5695)
3D support: free textures on guest application termination (bug #5206)
3D support: fixed ubigraph_server crashes (#4674)
3D support: fixes for 64-bit Solaris guests
Seamless: disable seamless mode when guest changes screen resolution (bug #5655)
NAT: fixed high CPU load under certain circumstances (Windows hosts only; bug #5787)
NAT: fixed handling of the broadcast flag in DHCP requests
NAT: fixed rare crash due to an assertion in the ICMP code (bug #3217)
Virtio-net: don't crash when ports accessed beyond the valid range (bug #5923)
LsiLogic: fix for Windows 7 guests
ATA: fix for guru meditation when installing Solaris 8 guests (bug #5972)
VHD: fixed an incompatibility with Virtual PC (bug #5990)
VHD: update the footer backup after setting a new UUID (bug #5004)
Host DVD: really fixed loading "passthrough" setting from config file (bug #5681)
Shared folders: fixed resolving of symlink target on Linux (3.1.2 regression)
VRDP: fixed VERR_NET_ADDRESS_IN_USE error when restarting a VM (3.1 regression; bug #5902)
VRDP: fixed crash on Mac OS X when 3D is enabled (3.1 regression)
PulseAudio: fixed recording (bug #4302)
USB: fixed a shutdown blue screen (Windows hosts only; bug #5885)
BIOS: fixed attribute during text scroll (bug #3407)
OVF: fix strange error messages on disk import errors
OVF: do not require write access the the .ovf file during import (3.1 regression; bug #5762)
iSCSI: fix taking snapshots of a running VM (#5849)
Solaris hosts: several USB fixes (including support for Apple iPod; bug #5873)
Solaris installer: fixed USB module removal and Solaris 10 "id" binary incompatibility
Guest Additions: fixed wrong guest time adjustment if the guest clock is ahead (3.1 regression; non-Windows guests only)
Linux Additions: fixed shared folders for Linux 2.6.32 guests (bug #5891)
Linux Additions: make the mouse driver work on Debian 5.0.3 guests again (3.1.2 regression, bug #5832)
Windows Additions: fixed malfunctioning !VBoxService that broke time-sync (bug #5872)
Windows Additions: fixed uninstallation issues on 64-bit guests
Windows Additions: fixed some sysprep execution issues
X.Org Additions: never reject the saved video mode as invalid (bug #5731)
XFree86 Additions: accept video mode hints for the initial mode again.

Requirements:
Mac OS X 10.4 or later.

Graaazie:)

[B]VirtualBox - 3.1.6[/B]

What's new in this version:
Linux hosts: fixed timing issue on hosts with Linux kernels 2.6.31 or later with certain CPUs (asynchronous timer mode; bug #6250)
Linux hosts: properly handle host suspend/resume events on Linux kernels 2.6.30 or later (bug #5562)
Mac OS X hosts: fixed VBoxSVC crash while enumerating the host network interfaces under certain circumstances
Snapshots: fixed image corruption after snapshot merge under certain circumstances (bug #6023)
Snapshots: fixed crash with VBoxHeadless / OSE
VMM: fixed reference counting guru meditation (bug #4940)
VMM: improved guest SMP stability
VMM: fixed VT-x hardware debug issues (bugs #477 & #5792)
VMM: fixed PGMDynMapHCPage guru meditation (Mac OS X; VT-x only; bug #6095)
VMM: fixed pgmPoolTrackFlushGCPhysPTInt guru meditations (Mac OS X; VT-x only; bugs #6095 & #6125)
VMM: Fixed host crash when running PAE guests in VT-X mode (Mac OS X only; bug #5771).
GUI: fix displaying of error message (bug #4345)
GUI: fix inability to enter seamless mode (bugs #6185, #6188 )
3D support: fixed assertion and flickering when guest application uses several windows with a single OpenGL context (bug #4598 )
3D support: fixed host crashes when using GL_EXT_compiled_vertex_array and array element calls (bug #6165)
3D support: fixed runtime linker errors with OpenGL guest libs (bug #5297)
3D support: fixed OpenGL extension viewer crash on startup (bug #4962)
NAT: fixed a 3.1.4 regression on Windows hosts where graceful connection termination was broken (bug #6237)
NAT: alternative network setting was not stored persistent (bug #6176)
NAT: fixed memory corruption during ICMP traffic under certain circumstances
Network: allow to switch the host interface or the internal network while a VM is running (bug #5781)
VHD: fix for images with a block size different than 2MB
USB: fixed filtered device attach regression (bug #6251)
USB: fixed crash in OHCI under rare circumstances (bug #3571)
VRDP: fixed hang under rare circumstances when attaching USB devices
ACPI: prevent guest freezes when accessing /proc/acpi for determining the state of the host battery and the AC adapter (Linux hosts only; bug #2836)
PulseAudio: fixed guest freezes under certain conditions (3.1.4 regression; bug #6224)
BIOS: increased space for DMI strings
BIOS: fixed interrupt routing problem for certain configurations (I/O-APIC enabled, ACPI not used; bug #6098 )
iSCSI: be more robust when handling the INQUIRY response
iSCSI: be more robust when handling sense data
BusLogic: fixed FreeBSD guests
webservice: vboxwebsrv is now multithreaded
Solaris Installer: fixed netmask to stay persistent across reboots for Host-only interface (bug #4590)
Linux installer: removed external dependency to libpng12.so (bug #6243)
Solaris Additions: fixed superfluous kernel logging (bug #6181)
Linux Additions: fixed hang when starting the X server in Fedora12 guests and in guests with Linux 2.6.33 or later (bug #6198 )
Linux Additions: support Mandriva speedboot runlevel (bug #5484)
Linux Additions: fixed SELinux security context of mount.vboxsf (bug #6362)
Linux Additions: support Ubuntu 10.04 (bug #5737)
Web service: update PHP bindings to fix problems with enums and collections.

Requirements:
Mac OS X 10.4 or later.

[B]VirtualBox - 3.1.8[/B]

Changelog: http://www.virtualbox.org/wiki/Changelog.

[B]This is a maintenance release. The following items were fixed and/or added:[/B]
VMM: fixed crash with the OpenSUSE 11.3 milestone kernel during early boot (software virtualization only; bug #5457)
VMM: fixed invalid state during teleportation
VMM: fixed OS/2 guest crash with nested paging enabled
VMM: fixed massive display performance loss (AMD-V with nested paging only)
GUI: fixed off-by-one bug when passing absolute mouse coordinates to the guest (3.1.6 regression)
GUI: show the real version of the Guest Additions, not the interface version
GUI: when adding a DVD or floppy slot in the VM mass storage settings dialog, don't attach a random medium but just leave the slot empty
GUI: added --seamless and --fullscreen command line switches (bug #4220)
GUI: fixed a SEGFAULT under rare circumstances
2D Video acceleration: fixed display issues when working with non 32-bit modes (bugs #6094 & #6208 )
LsiLogic: Fixed detection of hard disks attached to port 0 when using the drivers from LSI
ATA: Fixed sporadic crash with Linux guests when having a hard disk and DVD drive on the same channel (bug #6079)
Network: allow to start a VM even if not all network adapters are attached
Network: promiscuous mode support for e1000 and simparavirtualized adapters (bug #6519)
NAT: fixed ICMP latency (non-Windows hosts only; bug #6427)
SCSI: fixed guest crashes under certain circumstances when booting from SCSI devices
VBoxManage: fixed modifyvm --natnet default
Solaris Hosts: fixed a kernel panic when bridged networking might fail to initialize
Solaris Hosts: fixed priority tagged VLAN packets in bridged networking
Shared folders: fixed issue with copying read-only files (Linux guests only; bug #4890)
Shared folders: renamed the guest kernel module from vboxvfs to vboxsf to make it load on demand by the Linux kernel. Fixes mounting from /etc/fstab in Ubuntu 10.04
Shared folders: fixed setuid file permissions (Solaris guests only).
Shared folders: fixed deleting directories recursively (Solaris guests only; bug #6513)
Guest Additions: support seamless and dynamic resizing on certain older X11 guests (bug #5840)
Solaris Additions: fixed OpenGL library dependencies (bug #6435)
Keyboard/Mouse emulation: fixed handling of simultaneous mouse/keyboard events under certain circumstances (bug #5375)
Mouse emulation: never switch straight back from Explorer to IntelliMouse mode as it confuses the FreeBSD mouse driver (bug #6488 )
SDK: fixed memory leak in IDisplay::takeScreenShotSlow() (bug #6549)
3D support: fixed Final frame of Compiz animation not updated to the screen (Mac OS X only) (bug #4653)
VRDP: allow to bind to localhost only on Mac OS X (bug #5227)
Linux hosts: add host USB support for Ubuntu 10.04 and other hosts without the hal daemon or usbfs (bug #6343)
webservice: more structs and array fixes in PHP bindings (bug #5657)
Windows hosts: make the bridged networking driver notify dll be correctly unregistred on uninstall (bug #5780)

Requirements:
Mac OS X 10.4 or later.

[B]VirtualBox - 3.2.0[/B]

[B]Changelog[/B]: http://www.virtualbox.org/wiki/Changelog

[B]This version is a major update. The following major new features were added:[/B]
Following the acquisition of Sun Microsystems by Oracle Corporation, the product is now called Oracle VM VirtualBox and all references were changed without impacting compatibility
Experimental support for Mac OS X guests (see the manual for more information)
Memory ballooning to dynamically in- or decrease the amount of RAM used by a VM (64-bit hosts only) (see the manual for more information)
Page Fusion automatically de-duplicates RAM when running similar VMs thereby increasing capacity. Currently supported for Windows guests on 64-bit hosts (see the manual for more information)
CPU hot-plugging for Linux (hot-add and hot-remove) and certain Windows guests (hot-add only) (see the manual for more information)
New Hypervisor features: with both VT-x/AMD-V on 64-bit hosts, using large pages can improve performance (see the manual for more information); also, on VT-x, unrestricted guest execution is now supported (if nested paging is enabled with VT-x, real mode and protected mode without paging code runs faster, which mainly speeds up guest OS booting)
Support for deleting snapshots while the VM is running
Support for multi-monitor guest setups in the GUI for Windows guests (see the manual for more information)
USB tablet/keyboard emulation for improved user experience if no Guest Additions are available (see the manual for more information).
LsiLogic SAS controller emulation (see the manual for more information)
RDP video acceleration (see the manual for more information)
NAT engine configuration via API and VBoxManage
Use of host I/O cache is now configurable (see the manual for more information)
Guest Additions: added support for executing guest applications from the host system (replaces the automatic system presimparation feature; see the manual for more information)
OVF: enhanced OVF support with custom namespace to preserve settings that are not part of the base OVF standard
[B]In addition, the following items were fixed and/or added:[/B]
VMM: fixed Windows 2000 guest crash when configured with a large amount of RAM (bug #5800)
Linux/Solaris guests: PAM module for automatic logons added
GUI: guess the OS type from the OS name when creating a new VM
GUI: added VM setting for passing the time in UTC instead of passing the local host time to the guest (bug #1310)
GUI: fixed seamless mode on secondary monitors (bugs #1322 and #1669)
GUI: offer to download the user manual in the OSE version (bug #6442)
Main: allow to start a VM even if a virtual DVD or floppy medium is not accessible
Settings: be more robust when saving the XML settings files
Mac OS X: rewrite of the CoreAudio driver and added support for audio input (bug #5869)
Mac OS X: external VRDP authentication module support (bug #3106)
Mac OS X: Moved the realtime dock preview settings to the VM settings (no global option anymore). Use the dock menu to configure it.
Mac OS X: added the VM menu to the dock menu
3D support: fixed corrupted surface rendering (bug #5695)
3D support: fixed VM crashes when using ARB_IMAGING (bug #6014)
3D support: fixed assertion when guest applications uses several windows with single OpenGL context (bug #4598 )
3D support: added GL_ARB_pixel_buffer_object support
3D support: added OpenGL 2.1 support
3D support: fixed Final frame of Compiz animation not updated to the screen (Mac OS X only) (bug #4653)
3D support: fixed blank screen after loading snapshot of VM with enabled Compiz
Added support for virtual high precision event timer (HPET)
OVF: fixed mapping between two IDE channels in OVF and the one IDE controller in VirtualBox
OVF: fix VMDK format string identifiers and sort XML elements from rasd: namespace alphabetically as prescribed by standard
VBoxShell: interactive Python shell extended to be fully functional TUI for VirtualBox
Linux Additions: support Fedora 13 (bug #6370)
VBoxManage: fixed overly strict checks when creating a raw partition VMDK (bugs #688, #4438 )

[B]VirtualBox - 3.2.2[/B]

[B]Changelog:[/B]http://www.virtualbox.org/wiki/Changelog

[B]This is a maintenance release. The following items were fixed and/or added:[/B]
VMM: fixed rare invalid guest state guru meditation (VT-x only)
VMM: fixed poor performance with nested paging and unrestricted guest execution (VT-x only; bug #6716)
VMM: fixed occasional guru meditation during Windows 7 bootup (bug #6728 )
GUI: keep the status for remote control in sync with the actual state
GUI: don't exit after a successful refresh of an invalid VM configuration
GUI: fixed keyboard capturing bug under metacity (bug #6727)
GUI: fixed crash during VM termination if a modal dialog is open
GUI: default controllers names of New VM Wizard are synchronized with VM settings
GUI: fixed superfluous resize-event on powering-on VM for X11
GUI: fixed regression - missed USB item's tool-tip of USB devices menu
GUI: Activate VM window on mouse-hovering for multi-monitor VMs
VBoxSDL/Linux hosts: automated keyboard type detection (bug #5764)
SATA: fixed crash during VM suspend under rare circumstances
SATA: fixed crash during VM reset after a snapshot was taken
Storage: fixed sporadic hang of SMP guests using SATA or LSI Logic SCSI and asynchronous I/O
Virtio-net: fix for guests with more than about 4GB RAM (bug #6784)
Page Fusion: fixed VBoxService crash with enabled Page Fusion on Win64 guests
Page Fusion: added kernel module sharing
HGCM: fixed memory leak which showed up if the Guest Additions were accessing a non-existing HGCM service
Teleportation: several fixes
Floppy: don't disable the host I/O cache by default
USB: fixed 3.1 regression with certain devices (e.g. iPhone); Windows host only
Serial: updated the guest device emulation to 16550A and reduced the probability for loosing bytes during transmission (bug #1548 )
NAT: re-fetch the name server parameters from the host on guest DHCP requests to handle host network switches more gracefully (bug #3847)
NAT: fixed parsing of IPv4 addresses in CIDR notation (bug #6797)
NAT: limit the number of name servers passed to the guest to four (non-Windows hosts only; bug #4098 )
NAT: fixed DNS transaction id mismatch (bug #6833)
VDE: fixed changing the attachment during runtime
Bridged Networking: fixed memory leak in the Bridged Networking driver for Windows hosts (bug #6824)
Windows Additions: fix for NT4 guests (bug #6748 )
Windows Additions: re-introduced system preparation feature
Linux guests: enable PAE for RedHat guests by default
Linux guests: fix support for disabling mouse integration (bug #6714)
Webservice: fixed a rare crash when calling IGuest methods from the webservice.
OVF: fixed wrong hard disk UUIDs on export (bug #6802)
OVF: fixed 3.2.0 regression importing legacy OVF 0.9 files
3D support: fixed OpenGL support for 64bit apps on windows guests
3D support: fixed various host crashes (#2954, #5713, #6443)

Devo essermi perso qualche aggiornamento...
Grazie votantonio :)

[B]VirtualBox - 3.2.4[/B]

[B]Changelog:[/B] http://www.virtualbox.org/wiki/Changelog

[B]This is a maintenance release. The following items were fixed and/or added:[/B]
GUI: fixed a superfluous resize-event on powering-on VM for X11 (improvement for the 3.2.2 fix)
Host-only/bridged networking: fixed guest-to-guest communication over wireless (3.2.0 regression; bug #6855)
Storage: fixed a potential guest disk corruption with growing images (3.2.0 regression)
Page Fusion: fixed shared module detection for Win64 guests
3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)
3D support: fixed a host assertion for some multi-threaded guest applications (bug #5236)
3D support: fixed host crashes with nVIDIA drivers on WDDM startup
OVF: fixed import of OVFs with a VM description (annotation) (3.2.2 regression; bug #6914)
VRDP: fixed issues with secondary monitors (bug #6759).

http://www.macupdate.com/images/icons/24801.png [B]VirtualBox 3.2.6[/B]

WHAT'S NEW
Version 3.2.6:
• VMM: fixed host crash when running 64-bit guests on 32-bit hosts with certain Intel CPUs (VT-x only; bug #6166)
• VMM: allow 64-bit SMP guests on 32-bit hosts (VT-x and AMD-V only; does not apply to Mac OS X, which already supports it)
• VMM: fixed Guru mediation if guests with more than 2GB are booted with VT-x/AMD-V disabled (bug #5740)
• VMM: fixed TR limit trashing (VT-x and 64-bit host only; bug #7052)
• Page Fusion: several bug fixes for SMP guests (including bug #6964)
• Teleportation: several fixes and improvements
• Mac OS X server guests: compatibility fix
• EFI: fixed memory detection for guests with 2GB or more RAM assigned
• GUI: added a workaround for a Linux kernel bug which affecting asynchronous I/O on ext4 / xfs file systems (Linux hosts only)
• GUI: added setting for multiple VRDP connections; useful if multiple screens are enabled
• GUI: another fix for the keyboard capturing bug under metacity (bug #6727)
• GUI: fixed quit dialog when used in seamless or fullscreen mode (Mac OS X hosts only; bug #6938)
• GUI: handle the extra key on the Brazilian keyboard on X11 hosts again (bug #7022).
• 2D Video acceleration: fixed crashes when leaving the fullscreen mode (bug #6768)
• VBoxManage: fixed storageattach error handling (bug #6927)
• VBoxManage: fixed dhcpserver add (3.2.0 regression; bug #7031)
• Storage: fixed hang with images located on filesystems which don't support async I/O (bug #6905)
• Storage: fixed raw disks on Windows hosts (3.2.0 regression; bug #6987)
• LsiLogic: fixed hang with older Linux guests
• BusLogic: fixed hang during I/O
• SATA: set initial number of ports to 1 as some guests can't handle 30 ports (e.g. CentOS 4 and FreeBSD; bug #6984)
• SATA: performance improvement
• SCSI: fixed error when using the full format option during Windows installation (bug #5101)
• iSCSI: fixed authentication (bug #4031)
• Host-only/bridged networking: fixed excessive host kernel warnings under certain circumstances (Linux hosts only; 3.2.0 regression; bug #6872)
• NAT: fixed potential memory leaks
• NAT: increased the size of the memory pool for 16K Jumbo frames (performance tweak)
• NAT: allow to link/unlink the network cable even if the VM is currently paused
• E1000: disconnect cable was not properly handled if the NIC was not yet initialized by the guest
• OVF: export performance optimization
• OVF: upgraded OS type definitions to CIM 2.25.0 so that Windows 7 and other OSes are now tagged correctly on export
• Settings: the setting for disabling the host I/O cache was sometimes not properly saved
• Settings: save machine state into XML correctly even when snapshot folder has been changed to a non-default location (bug #5656)
• USB: allow the guest to disable an EHCI port
• USB: find a valid language ID before querying strings (bug #7034)
• POSIX hosts: fixed several memory leaks (3.2.0 regression)
• Solaris hosts: fixed VDI access problem under certain circumstances (IDE/SATA; 3.2.0 regression)
• Solaris hosts: fixed VM fails to start on 32-bit hosts (3.2.0 regression; bug #6899)


.

Version 3.2.8:
VMM: properly terminate the VM with an error if the guest is trying to switch to the PAE mode but PAE is disabled in the VM settings
GUI: switch to native file dialogs (Windows hosts only; bug #5459)
GUI: don't use native file dialogs on KDE hosts (Linux hosts only; bug #6809)
3D support: fixed GL_EXT_texture_sRGB support
PXE: fixed ZENworks PXE boot regression
OVF: fixed slower export and larger images under certain circumstances (3.2.6 regression; bug #7073)
USB: properly signal an interrupt if the port suspend status changes
USB: respect the remote-only filter
USB: avoid VM hang when changing the configuration of certain devices (Windows hosts only)
USB: fix a crash with older Linux kernels and non-ASCII characters in device strings (Linux hosts only; bug #6983)
PageFusion: fixed conflict with the guest execution feature
PageFusion: fixed stability issues with a large number of VMs
PageFusion: fixed host crashes with guest SMP and Win64 guests
Memory ballooning: fixed problems restoring VMs with pre-allocation enabled
Bridged networking: fixed performance issue with GRO enabled on bridged device (bug #7059)
Hostonly networking: fixed performance issue (3.2.6 regression; bug #7081)
Hard disks: fix auto-reset of immutable disk at VM startup (bug #6832)
BusLogic: several fixes for Windows NT/2000 and SCO OpenServer guests
LsiLogic: fixed I/O errors under rare circumstances
Sharing disks: support for attaching one disk to several VMs without external tools and tricks
Shared folders: several fixes and performance enhancements for Solaris guests (bugs #4154 and #6512)
Solaris Installer: added support for remote installations
Guest Properties API: correctly support enumerating the properties of a running VM with an empty "patterns" field (bug #7171)
Guest properties: properly delete transient properties on shutdown
RDP video redirection performance improvements and stability fixes
Settings: silently fix host audio driver when reading machine XML settings files or OVF written by VirtualBox on a different host OS, for example convert DirectSound to PulseAudio (bug #7209)
Settings: properly store the NAT network setting in XML settings file version 1.10 and later (bug #6176)
VBoxManage: handle differencing images with parent UUID correctly in subcommand openmedium disk (bug #6751)
Web service: enabled HTTP keepalive for much better performance
Web service: added timestamps to logging output
Web service: treat 8-bit strings as UTF-8 not ASCII
X11 Additions: fix for Xorg 6.8 guests (e.g. RHEL4)

3.2.10

This is a maintenance release. The following items were fixed and/or added:

VMM: V8086 mode fix for legacy DOS/Windows guests with EMM386 (3.2.8 regression)
VMM: stability fix (bug 7342)
VMM: fixed a Guru meditation related to large pages (bug 7300)
VMM: fixed support for large pages on Linux hosts
VMM: fixed a Guru meditation for large memory 64-bit guests on 32-bit hosts with nested paging (bug 7544)
VMM: performance improvements for VMs with more than 2 GB RAM (bug 6928)
GUI: fixed host key handling if the host key is set to Left Alt (Linux/Solaris hosts only; 3.2.0 regression; bug 6758)
GUI: the VM can be minimized from the mini toolbar (bug 4952)
GUI: handle Ctrl+Break properly on X11 hosts (3.2.0 regression; bug 6122)
GUI: fixed the case where the user aborted the media selector for selecting the boot hard disk from the VM wizard
GUI: added a check for Linux kernels 2.6.36 or later which are known to have the asynchronous I/O bug on ext4 / xfs file systems fixed (Linux hosts only)
OpenSolaris guests: use SATA controller by default
Storage: fixed I/O errors in the guest after compacting VDI images (3.2.6 regression; bug 7294)
Storage: automatically repair base disk images with non-zero parent UUID which made them inaccessible (bug 7289)
Storage: fixed corrupted images if a merge operation was canceled
IDE: added ATAPI passthrough support for audio CDs (bug 3494)
SATA: fixed a potential hang during boot of recent Solaris guests
SATA: handle out of disk space and similar conditions better
iSCSI: fixed sporadic hangs when closing the connection
VGA: fixed missing redraw with multiple screens under certain circumstances (bug 7291)
VGA: serveral small fixes for legacy VGA graphics modes
Bridged networking: fixed occasional host freeze during VM shutdown (Linux hosts only)
NAT: don't check for the existence of the TFTP prefix when delivering a file via bootp (bug 7384)
NAT: fixed resolving of names at the host resolver (bug 7138)
NAT: under rare conditions the NAT engine consumed 100% CPU load (non-Windows hosts only)
VRDP: fixed memory leak under certain circumstances (bug 5966)
VRDP: fixed missing redraws with Windows guests under certain circumstances
USB: properly discard blocking outstanding bulk URBs, fixes some printers
USB: Blackberry fix (bug 6465)
VBoxHeadless: fixed event queue processing problems which led to hangs if the VM could not be started successfully
VBoxManage: don't crash if parameters with invalid characters are passed (bug 7388)
VBoxManage: clonehd: fixed a bug where the command aborted with an error message under rare circumstances
VBoxManage: metrics: made it work for directly started VMs again (3.2.8 regression; bug 7482)
3D support: report GLX_ARB_get_proc_address as supported extension
3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug 7395)
3D support: fixed broken 3D support when switching to fullscreen/seamless modes (bug 7314)
3D support: fixed 32bit OpenGL apps under 64bit Windows XP/Vista (bug 7066)
OVF: fixed bug when exporting a VM with multiple attached disks (bug 7366)
OVF: fixed slow export for certain filesystems (bug 3719)
OVF: disabled manifest (.mf file) support; manifests are no longer verified on import nor written on export
Shared clipboard/Windows: improved the reliability of the shared clipboard on Windows hosts and guest (partial fix to bug 5266)
Shared Folders: don't show an empty directory if filenames with an invalid encoding exist on the host (bug 7349)
Shared Folders: return the proper error code when trying to list files for a non-existing wildcard (bug 7004)
Audio: fixed guest memory corruption when capturing from the NULL audio backend (bug 6911)
Audio: improved playback quality (less choppy) (bug 6816)
Web service: avoid unnecessary creation of idle threads
Additions: fixed bug in the guest execution feature when passing more than one environment variable
Additions: refresh all guest properties written by VBoxService after the VM was restored from a saved state
Additions: fixed a division by zero crash of VBoxService under certain circumstances
Additions: immediately resynchronize the guest time with the host time after the VM was restored from a saved state (bug 4018)
Additions/Windows: fixed LsaEnumerate error when enumerating logged in users
Additions/X.Org: support X.Org Server 1.9 (bug 7306)
Additions/X.Org: don't crash VBoxClient during reboot
Solaris hosts: fixed host DVD drive enumeration on Solaris 10
Solaris hosts: added a custom core dumper to procure more data in the event of a VM crash
Solaris guests: fixed user idle detection
Solaris guests: fixed a possible panic in Shared Folders when using the wrong user or group IDs (bug 7295)
Solaris guests: fixed Shared Folders from truncating files to 2GB on 32-bit guests (bug 7324)
Windows hosts: fixed a BSOD under certain circumstances in VBoxNetFlt.sys (bug 7448)
Linux hosts/guests: Linux 2.6.36 fixes
Linux hosts/guests: DKMS fixes (bug 5817)
Mac OS X hosts: fixed missing dock menu entries (bug 7392)

Virtualbox 4.0
[CODE]Version 4.0.0:
Reorganization of VirtualBox into a base package and Extension Packs; see chapter 1.5, Installing VirtualBox and extension packs, see the manual for more information
New settings/disk file layout for VM portability; see chapter 10.1, Where VirtualBox stores its files, see the manual for more information
Major rework of the GUI (now called “VirtualBox Manager”):
Redesigned user interface with guest window preview (also for screenshots)
New “scale” display mode with scaled guest display; see chapter 1.8.5, Resizing the machine’s window, see the manual for more information
Support for creating and starting .vbox desktop shortcuts (bug #1889)
The VM list is now sortable
Machines can now be deleted easily without a trace including snapshots and saved states, and optionally including attached disk images (bug #5511; also, VBoxManage unregistervm --delete can do the same now)
Built-in creation of desktop file shortcuts to start VMs on double click (bug #2322)
VMM: support more than 1.5/2 GB guest RAM on 32-bit hosts
New virtual hardware:
Intel ICH9 chipset with three PCI buses, PCI Express and Message Signaled Interrupts (MSI); see chapter 3.4.1, “Motherboard” tab, see the manual for more information
Intel HD Audio, for better support of modern guest operating systems (e.g. 64-bit Windows; bug #2785)
Improvements to OVF support (see chapter 1.12, Importing and exporting virtual machines, see the manual for more information):
Open Virtualization Format Archive (OVA) support
Significant performance improvements during export and import
Creation of the manifest file on export is optional now
Imported disks can have formats other than VMDK
Resource control: added support for limiting a VM’s CPU time and IO bandwidth; see chapter 5.8, Limiting bandwidth for disk images, see the manual for more information
Storage: support asynchronous I/O for iSCSI, VMDK, VHD and Parallels images
Storage: support for resizing VDI and VHD images; see chapter 8.21, VBoxManage modifyhd, see the manual for more information.
Guest Additions: support for multiple virtual screens in Linux and Solaris guests using X.Org server 1.3 and later
Language bindings: uniform Java bindings for both local (COM/XPCOM) and remote (SOAP) invocation APIs
In addition, the following items were fixed and/or added:
VMM: Enable large page support by default on 64-bit hosts (applies to nested paging only)
VMM: fixed guru meditation when running Minix (VT-x only; bug #6557)
VMM: fixed crash under certain circumstances (Linux hosts only, non VT-x/AMD-V mode only; bugs #4529 and #7819)
GUI: add configuration dialog for port forwarding in NAT mode (bug #1657)
GUI: show the guest window content on save and restore
GUI: certain GUI warnings don’t stop the VM output anymore
GUI: fixed black fullscreen minitoolbar on KDE4 hosts (Linux hosts only; bug #5449)
BIOS: implemented multi-sector reading to speed up booting of certain guests (e.g. Solaris)
Bridged networking: improved throughput by filtering out outgoing packets intended for the host before they reach the physical network (Linux hosts only; bug #7792)
3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)
3D support: fixed various clipping/visibility issues (bugs #5659, #5794, #5848, #6018, #6187, #6570)
3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug #7395)
3D support: fixed OpenGL support for libMesa 7.9
3D support: fixed Unity/Compiz crashes on natty
2D Video acceleration: multimonitor support
VRDP: fixed rare crash in multimonitor configuration
VRDP: support for upstream audio
Display: fixed occasional guest resize crash
NAT: port forwarding rules can be applied at runtime
SATA: allow to attach CD/DVD-ROM drives including passthrough (bug #7058)
Floppy: support readonly image files, taking this as the criteria for making the medium readonly (bug #5651)
Audio: fixed memory corruption during playback under rare circumstances
Audio: the DirectSound backend now allows VMs to be audible when another DirectSound application is active, including another VM (bug #5578)
EFI: support for SATA disks and CDROMs
BIOS: reduce the stack usage of the VESA BIOS function #4F01 (Quake fix)
OVF/OVA: fixed export of VMs with iSCSI disks
Storage: Apple DMG image support for the virtual CD/DVD (bug #6760)
Linux host USB support: introduced a less invasive way of accessing raw USB devices (bugs #1093, #5345, #7759)
Linux hosts: support recent Linux kernels with CONFIG_DEBUG_SET_MODULE_RONX set
Guest Additions: Shared Folders now can be marked as being auto-mounted on Windows, Linux and Solaris guests
Linux Additions: Shared Folders now support symbolic links (bug #818)
Linux Additions: combined 32-bit and 64-bit additions into one file
Windows Additions: automatic logon on Windows Vista/Windows 7 is now able to handle renamed user accounts; added various bugfixes
REQUIREMENTS
Mac OS X 10.4 or later.[/CODE]

[COLOR=#4A4A4A][FONT=Helvetica]Importante versione (4.2.1) per chi ha 10.8.2

The OS X 10.8.2 release includes some incompatible changes which require adaptions in VirtualBox. Therefore the original 4.2 build was replaced by a 4.2.1 build.[/FONT][/COLOR]

https://www.virtualbox.org/wiki/Downloads