I used to get the kernal panics on my Mac Pro, then I added some more memory and all was fine after that.
How much memory you got ?
12 GB ram
----------
Anonymous UUID: 66BAC329-685D-8101-592F-163D1017DA74
Sun Oct 7 12:01:34 2012
panic(cpu 2 caller 0xffffff802a8b7bd5): Kernel trap at 0xffffff7fac5dd4b7, type 13=general protection, registers:
CR0: 0x0000000080010033, CR2: 0x000000011670c1a0, CR3: 0x0000000067d8e05b, CR4: 0x00000000000606e0
RAX: 0x0000000000000000, RBX: 0x0000000010054000, RCX: 0xfff5ff8164aa3538, RDX: 0x0000000010054000
RSP: 0xffffff818316b740, RBP: 0xffffff818316b760, RSI: 0xffffff80499f7ae0, RDI: 0xffffff80469ac1c0
R8: 0x0000000000000fff, R9: 0x0000000040000000, R10: 0xffffff818316b300, R11: 0x0000000000000000
R12: 0xffffff80499f7ae0, R13: 0xffffff8060553600, R14: 0x0000000010054400, R15: 0xffffff80469ac1c0
RFL: 0x0000000000010282, RIP: 0xffffff7fac5dd4b7, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x000000011670c1a0, Error code: 0x0000000000000000, Fault CPU: 0x2
Backtrace (CPU 2), Frame : Return Address
0xffffff818316b3e0 : 0xffffff802a81d626
0xffffff818316b450 : 0xffffff802a8b7bd5
0xffffff818316b620 : 0xffffff802a8ce4ed
0xffffff818316b640 : 0xffffff7fac5dd4b7
0xffffff818316b760 : 0xffffff7fac656244
0xffffff818316b7c0 : 0xffffff7fac656547
0xffffff818316b830 : 0xffffff7fac6151a2
0xffffff818316b960 : 0xffffff7fac5c844c
0xffffff818316b9b0 : 0xffffff7fac6382fa
0xffffff818316b9f0 : 0xffffff7fac63005e
0xffffff818316ba40 : 0xffffff7fac5db146
0xffffff818316ba70 : 0xffffff7fac638107
0xffffff818316baa0 : 0xffffff7fac5db2da
0xffffff818316bad0 : 0xffffff7fac5cf093
0xffffff818316bb30 : 0xffffff7fac5d9d3e
0xffffff818316bba0 : 0xffffff802ac665b3
0xffffff818316bbc0 : 0xffffff802ac6718d
0xffffff818316bc20 : 0xffffff802ac64b8f
0xffffff818316bd70 : 0xffffff802a8981e1
0xffffff818316be80 : 0xffffff802a820aed
0xffffff818316beb0 : 0xffffff802a810448
0xffffff818316bf00 : 0xffffff802a81961b
0xffffff818316bf70 : 0xffffff802a8a5b16
0xffffff818316bfb0 : 0xffffff802a8ced53
Kernel Extensions in backtrace:
com.apple.iokit.IOAcceleratorFamily(19.0.26)[7DC411F1-A646-3A4A-B160-A1492F5EC0ED]@0xffffff7fac5ba000->0xffffff7fac600fff
dependency: com.apple.iokit.IOPCIFamily(2.7.1)[9901C237-547C-3B52-99DE-C4870A19E2B5]@0xffffff7faae8d000
dependency: com.apple.iokit.IONDRVSupport(2.3.5)[86DDB71C-A73A-3EBE-AC44-0BC9A38B9A44]@0xffffff7fab3ed000
dependency: com.apple.iokit.IOGraphicsFamily(2.3.5)[803496D0-ADAD-3ADB-B071-8A0A197DA53D]@0xffffff7fab3aa000
com.apple.AMDRadeonAccelerator(1.0)[D89E4100-9C89-3C99-B34B-F7790E1A0B8B]@0xffffff7fac60c000->0xffffff7fac9d9fff
dependency: com.apple.iokit.IOAcceleratorFamily(19.0.26)[7DC411F1-A646-3A4A-B160-A1492F5EC0ED]@0xffffff7fac5ba000
dependency: com.apple.iokit.IOPCIFamily(2.7.1)[9901C237-547C-3B52-99DE-C4870A19E2B5]@0xffffff7faae8d000
dependency: com.apple.iokit.IONDRVSupport(2.3.5)[86DDB71C-A73A-3EBE-AC44-0BC9A38B9A44]@0xffffff7fab3ed000
dependency: com.apple.iokit.IOGraphicsFamily(2.3.5)[803496D0-ADAD-3ADB-B071-8A0A197DA53D]@0xffffff7fab3aa000
BSD process name corresponding to current thread: WebProcess
Mac OS version:
12C54
Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide: 0x000000002a600000
Kernel text base: 0xffffff802a800000
System model name: iMac12,2 (Mac-942B59F58194171B)
System uptime in nanoseconds: 23862315092786
last loaded kext at 15710387076130: com.apple.filesystems.msdosfs 1.8 (addr 0xffffff7facbba000, size 65536)
last unloaded kext at 22994217488094: com.apple.filesystems.msdosfs 1.8 (addr 0xffffff7facbba000, size 57344)
loaded kexts:
com.apple.filesystems.smbfs 1.8
com.apple.filesystems.afpfs 10.0
com.apple.nke.asp_tcp 7.0.0
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AGPM 100.12.69
com.apple.driver.AppleMikeyHIDDriver 122
com.apple.driver.AppleUpstreamUserClient 3.5.10
com.apple.driver.AppleHDA 2.3.1f2
com.apple.driver.AppleBacklight 170.2.3
com.apple.kext.AMDFramebuffer 8.0.0
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.driver.AppleMCCSControl 1.0.33
com.apple.driver.AppleIntelHD3000Graphics 8.0.0
com.apple.driver.AppleMikeyDriver 2.3.1f2
com.apple.driver.AppleSMCLMU 2.0.2d0
com.apple.AMDRadeonAccelerator 1.0.0
com.apple.driver.AppleIntelSNBGraphicsFB 8.0.0
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.0.9f33
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.6.0
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.0.9f33
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.ApplePolicyControl 3.2.11
com.apple.iokit.SCSITaskUserClient 3.5.1
com.apple.driver.AppleUSBCardReader 3.1.0
com.apple.driver.AppleIRController 320.15
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.iokit.AppleBCM5701Ethernet 3.2.5b3
com.apple.driver.AirPort.Atheros40 600.70.23
com.apple.driver.AppleFWOHCI 4.9.6
com.apple.driver.AppleUSBEHCI 5.4.0
com.apple.driver.AppleAHCIPort 2.4.1
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.security.SecureRemotePassword 1.0
com.apple.driver.DspFuncLib 2.3.1f2
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleThunderboltEDMSink 1.1.8
com.apple.driver.AppleThunderboltEDMSource 1.1.8
com.apple.iokit.IOAcceleratorFamily 19.0.26
com.apple.kext.AMD6000Controller 8.0.0
com.apple.kext.AMDSupport 8.0.0
com.apple.driver.AppleUSBAudio 2.9.0f6
com.apple.iokit.IOAudioFamily 1.8.9fc10
com.apple.kext.OSvKernDSPLib 1.6
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.0.9f33
com.apple.driver.AppleHDAController 2.3.1f2
com.apple.iokit.IOHDAFamily 2.3.1f2
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.2.0d16
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.kext.triggers 1.0
com.apple.iokit.IOSurface 86.0.3
com.apple.iokit.IOSerialFamily 10.0.6
com.apple.iokit.IOBluetoothFamily 4.0.9f33
com.apple.driver.AppleSMC 3.1.4d2
com.apple.driver.AppleGraphicsControl 3.2.11
com.apple.iokit.IONDRVSupport 2.3.5
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.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.IOSCSIBlockCommandsDevice 3.5.1
com.apple.iokit.IOUSBMassStorageClass 3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.1
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.driver.AppleUSBMergeNub 5.2.5
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.iokit.IOUSBUserClient 5.2.5
com.apple.driver.AppleThunderboltNHI 1.6.0
com.apple.iokit.IOThunderboltFamily 2.1.1
com.apple.iokit.IOEthernetAVBController 1.0.2b1
com.apple.iokit.IO80211Family 500.15
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.driver.AppleEFIRuntime 1.6.1
com.apple.iokit.IOHIDFamily 1.8.0
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 2.7.1
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
System Profile:
Model: iMac12,2, BootROM IM121.0047.B1F, 4 processors, Intel Core i5, 3.1 GHz, 12 GB, SMC 1.72f2
Graphics: AMD Radeon HD 6970M, AMD Radeon HD 6970M, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435435313236344243313333392E4D313646
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x859B, 0x435435313236344243313333392E4D313646
Memory Module: BANK 0/DIMM1, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3230554638424353302D444A2D4620
Memory Module: BANK 1/DIMM1, 2 GB, DDR3, 1333 MHz, 0x02FE, 0x45424A3230554638424353302D444A2D4620
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x9A), Atheros 9380: 4.0.70.23-P2P
Bluetooth: Version 4.0.9f33 10885, 2 service, 11 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: OPTIARC DVD RW AD-5690H
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x850b, 0xfa200000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: USB 2.0 Hub [MTT], 0x1a40 (TERMINUS TECHNOLOGY INC.), 0x0201, 0xfa130000 / 5
USB Device: USB 2.0 Hub [MTT], 0x1a40 (TERMINUS TECHNOLOGY INC.), 0x0201, 0xfa137000 / 10
USB Device: Razer Imperator, 0x1532, 0x0017, 0xfa134000 / 9
USB Device: HD Pro Webcam C920, 0x046d (Logitech Inc.), 0x082d, 0xfa133000 / 8
USB Device: Razer Anansi, 0x1532, 0x010f, 0xfa132000 / 7
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: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 4
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfd110000 / 3