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grazie

Virtualbox - 3.0.10: http://www.virtualbox.org/wiki/Downloads

What's new:
This is a maintenance release. The following items were fixed and/or added:
VMM: guest SMP stability fixes
VMM: fixed guru meditation with nested paging and SMP guests (bug #5222)
VMM: changed VT-x/AMD-V usage to detect other active hypervisors; necessary for e.g. Windows 7 XP compatibility mode (Windows & Mac OS X hosts only; bug #4239)
VMM: guru meditation during SCO OpenServer installation and reboot (VT-x only; bug #5164)
VMM: fixed accessed bit handling in certain cases [bug #5248]
VMM: fixed VPID flushing (VT-x only)
VMM: fixed broken nested paging for 64 bits guests on 32 bits hosts (AMD-V only; bug #5285)
VMM: fixed loading of old saved states/snapshots (bug #3984)
Mac OS X hosts: fixed memory leaks (bug #5084)
Mac OS X hosts (Snow Leopard): fixed redraw problem in a dual screen setup (bug #4942)
Guest Additions: fixed possible guest OS kernel memory exhaustion
Guest Additions: fixed stability issues with SMP guests
3D support: removed invalid OpenGL assertion [bug #5158] • Network: fixed the Am79C973 PCNet emulation for QNX (and probably other) guests (bug #3206)
VMDK: fix handling of split image variants
VHD: do not delay updating the footer when expanding the image to prevent image inconsistency
USB: stability fix for some USB 2.0 devices
GUI: added a search index to the .chm help file
GUI/Windows hosts: fixed CapsLock handling on French keyboards (bug #2025)
Shared clipboard/X11 hosts: fixed a crash when clipboard initialisation failed (bug #4987).

Virtualbox - 3.0.12

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

What's new:
VMM: reduced IO-APIC overhead for 32 bits Windows NT/2000/XP/2003 guests; requires 64 bits support (VT-x only; bug #4392)
VMM: fixed double timer interrupt delivery on old Linux kernels using IO-APIC (caused guest time to run at double speed; bug #3135)
VMM: reinitialize VT-x and AMD-V after host suspend or hibernate; some BIOSes forget this (Windows hosts only; bug #5421)
VMM: fix loading of saved state when RAM preallocation is enabled
BIOS: ignore unknown shutdown codes instead of causing a guru meditation (bug #5389)
GUI: never start a VM on a single click into the selector window (bug #2676)
Serial: reduce the probability of lost bytes if the host end is connected to a raw file
VMDK: fix handling of split image variants and fix a 3.0.10 regression (bug #5355)
VRDP: fixed occasional VRDP server crash
Network: even if the virtual network cable was disconnected, some guests were able to send / receive packets (E1000; bug #5366)
Network: even if the virtual network cable was disconnected, the PCNet card received some spurious packets which might confuse the guest (bug #4496)
Shared folders: fixed changing case of file names (bug #2520)
Windows Additions: fix crash in seamless mode (contributed by Huihong Luo)
Linux Additions: fix writing to files opened in O_APPEND mode (bug #3805)
Solaris Additions: fix regression in guest additions driver which among other things caused lost guest property updates and periodic error messages being written to the system log.

Requirements:
Mac OS X 10.4 or later.

molto bene. grazie per la segnalazione.

Grazie mille!

Grazie Votantonio

Thank you

grazie

Virtualbox - 3.1.0

http://www.virtualbox.org/.

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

This version is a major update. The following major new features were added:
Teleportation (aka live migration); migrate a live VM session from one host to another (see the manual for more information)
VM states can now be restored from arbitrary snapshots instead of only the last one, and new snapshots can be taken from other snapshots as well ("branched snapshots"; see the manual for more information)
2D video acceleration for Windows guests; use the host video hardware for overlay stretching and color conversion (see the manual for more information)
More flexible storage attachments: CD/DVD drives can be attached to arbitrary storage controllers, and there can be more than one such drive (the manual for more information)
The network attachment type can be changed while a VM is running
Complete rewrite of experimental USB support for OpenSolaris hosts making use of the latest USB enhancements in Solaris Nevada 124 and higher
Significant performance improvements for PAE and AMD64 guests (VT-x and AMD-V only; normal (non-nested) paging)
Experimental support for EFI (Extensible Firmware Interface; see the manual for more information)
Support for paravirtualized network adapters (virtio-net; see the manual for more information).

Changelog (lista completa): http://www.virtualbox.org/wiki/Changelog.

Grazie Votantonio!