Grazie mille delle info, vedo di fare tutti i passaggi possibili, mentre vi posto un resoconto del kernel panic l'unica volta che l'ha generato:
Interval Since Last Panic Report: 1167349 sec
Panics Since Last Report: 1
Anonymous UUID: D93FEF4E-601F-F287-E2A7-2300E2B99748
Thu Jan 10 12:21:58 2013
Panic(CPU 0): Unresponsive processor (this CPU did not acknowledge interrupts) TLB state:0x0
RAX: 0x0000000000000000, RBX: 0xffffff800d8bec30, RCX: 0xffffff801fe75000, RDX: 0x00017bfc65109867
RSP: 0xffffff80efd5add8, RBP: 0xffffff80efd5ae10, RSI: 0x000000002824443f, RDI: 0xffffff800d8bec68
R8: 0x0000000000000002, R9: 0x000007fa38f39500, R10: 0xffffff800d8bdc20, R11: 0x0000000000000001
R12: 0xffffff800d8bec30, R13: 0xffffff80efd5b068, R14: 0xffffff800d8bec68, R15: 0x0000000000000000
RFL: 0x0000000000000046, RIP: 0xffffff800d2ac4be, CS: 0x0000000000000008, SS: 0x0000000000000000
Backtrace (CPU 0), Frame : Return Address
0xffffff80efd5ac50 : 0xffffff800d2bd371
0xffffff80efd5ac80 : 0xffffff800d2b7203
0xffffff80efd5acd0 : 0xffffff800d2ce81b
0xffffff80efd5ae10 : 0xffffff800d23ec64
0xffffff80efd5ae50 : 0xffffff800d23ef7c
0xffffff80efd5ae90 : 0xffffff800d22972e
0xffffff80efd5aed0 : 0xffffff800d23f1fe
0xffffff80efd5af20 : 0xffffff800d2ab1e9
0xffffff80efd5af50 : 0xffffff800d2bd3ac
0xffffff80efd5af80 : 0xffffff800d2b7203
0xffffff80efd5afd0 : 0xffffff800d2ce6a8
0xffffff801a2c3c20 : 0xffffff7f8e0f06c1
0xffffff801a2c3c80 : 0xffffff7f8e13b8b9
0xffffff801a2c3cb0 : 0xffffff7f8e13ba28
0xffffff801a2c3ce0 : 0xffffff7f8e13d4c6
0xffffff801a2c3da0 : 0xffffff7f8e0ed89f
0xffffff801a2c3e20 : 0xffffff7f8e0df099
0xffffff801a2c3e60 : 0xffffff7f8e116300
0xffffff801a2c3e80 : 0xffffff7f8e0e1a9a
0xffffff801a2c3ec0 : 0xffffff7f8e08d5c2
0xffffff801a2c3ef0 : 0xffffff800d6472a8
0xffffff801a2c3f30 : 0xffffff800d645daa
0xffffff801a2c3f80 : 0xffffff800d645ed9
0xffffff801a2c3fb0 : 0xffffff800d2b26b7
Kernel Extensions in backtrace:
com.apple.driver.AirPort.Atheros40(600.70.23)[2E6077DF-D532-357F-8107-F23BC2C10F2F]@0xffffff7f8e07f000->0xffffff7f8e1c7fff
dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffffff7f8d850000
dependency: com.apple.iokit.IO80211Family(500.15)[4282DF5A-86B9-3213-B9B1-675FAD842A94]@0xffffff7f8e013000
dependency: com.apple.iokit.IONetworkingFamily(3.0)[28575328-A798-34B3-BD84-D708138EBD17]@0xffffff7f8da05000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
12C60
Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root

nu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide: 0x000000000d000000
Kernel text base: 0xffffff800d200000
System model name: iMac12,1 (Mac-942B5BF58194151B)
System uptime in nanoseconds: 417798924344590
last loaded kext at 417699954126222: com.apple.driver.AppleUSBCDC 4.1.22 (addr 0xffffff7f8f697000, size 16384)
last unloaded kext at 404823091262387: com.apple.driver.AppleUSBCDC 4.1.22 (addr 0xffffff7f8f694000, size 1228

loaded kexts:
com.roxio.TDIXController 2.0
com.parallels.filesystems.prlufs 2010.12.28
com.parallels.kext.prl_vnic 7.0 15107.796624
com.parallels.kext.prl_netbridge 7.0 15107.796624
com.parallels.kext.prl_hid_hook 7.0 15107.796624
com.parallels.kext.prl_hypervisor 7.0 15107.796624
com.parallels.kext.prl_usb_connect 7.0 15107.796624
com.apple.driver.AppleUSBCDC 4.1.22
com.apple.filesystems.udf 2.3
com.apple.filesystems.smbfs 1.8
com.apple.driver.AppleBluetoothMultitouch 75.15
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.iokit.IOBluetoothSerialManager 4.0.9f33
com.apple.filesystems.autofs 3.0
com.apple.driver.AGPM 100.12.69
com.apple.driver.AppleMikeyHIDDriver 122
com.apple.driver.AppleUpstreamUserClient 3.5.10
com.apple.kext.AMDFramebuffer 8.0.0
com.apple.AMDRadeonAccelerator 1.0.0
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.0.9f33
com.apple.driver.AppleHDA 2.3.1f2
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.driver.AppleSMCLMU 2.0.2d0
com.apple.driver.AppleIntelHD3000Graphics 8.0.0
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleMikeyDriver 2.3.1f2
com.apple.driver.AppleBacklight 170.2.3
com.apple.driver.AppleLPC 1.6.0
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.ApplePolicyControl 3.2.11
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleIntelSNBGraphicsFB 8.0.0
com.apple.driver.AppleMCCSControl 1.0.33
com.apple.driver.AppleUSBCardReader 3.1.0
com.apple.driver.AppleIRController 320.15
com.apple.iokit.SCSITaskUserClient 3.5.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 34
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.2.2
com.apple.driver.AppleUSBHub 5.2.5
com.apple.driver.AirPort.Atheros40 600.70.23
com.apple.iokit.AppleBCM5701Ethernet 3.2.5b3
com.apple.driver.AppleFWOHCI 4.9.6
com.apple.driver.AppleAHCIPort 2.4.1
com.apple.driver.AppleUSBEHCI 5.4.0
com.apple.driver.AppleEFINVRAM 1.6.1
com.apple.driver.AppleACPIButtons 1.6
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleHPET 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.6
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0
com.apple.nke.applicationfirewall 4.0.39
com.apple.security.quarantine 2
com.apple.driver.AppleIntelCPUPowerManagement 196.0.0
com.apple.driver.AppleBluetoothHIDKeyboard 165.5
com.apple.driver.AppleHIDKeyboard 165.5
com.apple.driver.IOBluetoothHIDDriver 4.0.9f33
com.apple.driver.AppleMultitouchDriver 235.28
com.apple.iokit.IOSerialFamily 10.0.6
com.apple.kext.triggers 1.0
com.apple.iokit.IOAcceleratorFamily 19.0.26
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.0.9f33
com.apple.kext.AMD6000Controller 8.0.0
com.apple.kext.AMDSupport 8.0.0
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.driver.DspFuncLib 2.3.1f2
com.apple.iokit.IOAudioFamily 1.8.9fc10
com.apple.kext.OSvKernDSPLib 1.6
com.apple.iokit.IOSurface 86.0.3
com.apple.iokit.IOBluetoothFamily 4.0.9f33
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleHDAController 2.3.1f2
com.apple.iokit.IOHDAFamily 2.3.1f2
com.apple.driver.AppleGraphicsControl 3.2.11
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.2.0d16
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleSMC 3.1.4d2
com.apple.iokit.IONDRVSupport 2.3.5
com.apple.driver.AppleThunderboltEDMSink 1.1.8
com.apple.driver.AppleThunderboltEDMSource 1.1.8
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.iokit.IOGraphicsFamily 2.3.5
com.apple.driver.AppleThunderboltDPOutAdapter 1.8.5
com.apple.driver.AppleThunderboltDPInAdapter 1.8.5
com.apple.driver.AppleThunderboltDPAdapterFamily 1.8.5
com.apple.driver.AppleThunderboltPCIDownAdapter 1.2.5
com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.1
com.apple.iokit.IOUSBMassStorageClass 3.5.0
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.driver.AppleUSBMergeNub 5.2.5
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.1
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.1
com.apple.driver.AppleThunderboltNHI 1.6.0
com.apple.iokit.IOThunderboltFamily 2.1.1
com.apple.iokit.IOUSBUserClient 5.2.5
com.apple.iokit.IO80211Family 500.15
com.apple.iokit.IOEthernetAVBController 1.0.2b1
com.apple.iokit.IONetworkingFamily 3.0
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOAHCIFamily 2.2.1
com.apple.iokit.IOUSBFamily 5.4.0
com.apple.iokit.IOHIDFamily 1.8.0
com.apple.driver.AppleEFIRuntime 1.6.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 220
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.DiskImages 344
com.apple.iokit.IOStorageFamily 1.8
com.apple.driver.AppleKeyStore 28.21
com.apple.driver.AppleACPIPlatform 1.6
com.apple.iokit.IOPCIFamily 2.7.2
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
panic(cpu 1 caller 0xffffff800d29db1b): "TLB invalidation IPI timeout: " "CPU(s) failed to respond to interrupts, unresponsive CPU bitmap: 0x1, NMIPI acks: orig: 0x0, now: 0x1"@/SourceCache/xnu/xnu-2050.18.24/osfmk/x86_64/pmap.c:2337
Backtrace (CPU 1), Frame : Return Address
0xffffff801a30b280 : 0xffffff800d21d626
0xffffff801a30b2f0 : 0xffffff800d29db1b
0xffffff801a30b370 : 0xffffff800d2a2330
0xffffff801a30b430 : 0xffffff800d2a2b65
0xffffff801a30b480 : 0xffffff800d266a1c
0xffffff801a30b570 : 0xffffff800d26a8f0
0xffffff801a30b5a0 : 0xffffff800d2653ef
0xffffff801a30b5d0 : 0xffffff800d2247fe
0xffffff801a30b5f0 : 0xffffff800d622ced
0xffffff801a30b610 : 0xffffff7f8d7fced1
0xffffff801a30b640 : 0xffffff7f8d7ff57b
0xffffff801a30b690 : 0xffffff7f8d7fd086
0xffffff801a30b6d0 : 0xffffff7f8d7fdb41
0xffffff801a30b890 : 0xffffff7f8d7f909f
0xffffff801a30ba40 : 0xffffff800d6898a4
0xffffff801a30ba90 : 0xffffff800d2f5640
0xffffff801a30bae0 : 0xffffff800d309351
0xffffff801a30bb90 : 0xffffff800d2fbb49
0xffffff801a30bc40 : 0xffffff800d2fc314
0xffffff801a30bf50 : 0xffffff800d5e182a
0xffffff801a30bfb0 : 0xffffff800d2ced33
Kernel Extensions in backtrace:
com.apple.security.sandbox(220.0)[BFFEC437-6820-3CDD-882F-346EAC151352]@0xffffff7f8d7f6000->0xffffff7f8d806fff
dependency: com.apple.kext.AppleMatch(1.0.0d1)[327C619E-5CC2-311F-8B0C-F9D508BFD5B0]@0xffffff7f8d7f2000
BSD process name corresponding to current thread: Mail
Model: iMac12,1, BootROM IM121.0047.B1E, 4 processors, Intel Core i5, 2.7 GHz, 8 GB, SMC 1.71f22
Graphics: AMD Radeon HD 6770M, AMD Radeon HD 6770M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x802C, 0x31364B54463531323634485A2D3147344D31
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x802C, 0x31364B54463531323634485A2D3147344D31
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.70.23-P2P
Bluetooth: Version 4.0.9f33 10885, 2 service, 18 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: SAMSUNG SSD 830 Series, 256,06 GB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x850b, 0xfa200000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: hub_device, 0x050d (Belkin Corporation), 0x0307, 0xfa130000 / 5
USB Device: BRCM2046 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8215, 0xfa111000 / 6
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: USB Mass Storage Device, 0x13fd (Initio Corporation), 0x2040, 0xfd140000 / 5
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfd110000 / 4