Kernel Panics out of the blue -- Should I try TechTool Pro or something else?

[vickishome]

Quick info: This is for my MacBook Pro. All RAM, etc is stock straight from Apple from the day I ordered it.

I have had two kernel panics in the last 8 days which is not normal. I've owned this computer for 2-3 years and have never had a kernel panic before (that I can remember) so having two in just a little over a week indicates to me that something is wrong.

I'd like to run some diagnostic tests to see if I can figure out if anything's failing.

The only maintenance software I run is Cocktail. I remember using TechTool years ago (could be as much as a decade ago by now) so I will probably need to buy it fresh again.

Would you guys suggest I get TechTool Pro or is that no longer recommended? Is there something else I should get instead? Thanks! :)

[hayne]

Start by doing 3 things:
1) Post the panic.log so maybe we can get a clue from it as to the cause. You should be able to get this log file via the "Console" app.

2) Do "Repair Disk" in Disk Utility when booted from the Install DVD.
See this Apple doc: http://docs.info.apple.com/article.html?artnum=106214

3) Check the RAM with 'memtest':
http://www.memtestosx.org/
Be sure to do the long test - several hours or overnight.

[vickishome]

1. panic.log coming in my next post.

2. Will do. I think I'll try "verify disk" first just to get an idea of what it reports. I hate doing repairs completely blind.

3. Fantastic. That's the kind of thing I was looking for.

I'll let you know what I find out! Thanks! :)

[vickishome]

First panic: Sun, May 29, 2011 at 22:43:00

Interval Since Last Panic Report: 684984 sec
Panics Since Last Report: 1
Anonymous UUID: B09FD079-DC5D-44AF-8018-BAEE3453A5D2

Sun May 29 22:43:00 2011
panic(cpu 3 caller 0x2aab59): Kernel trap at 0x0124d1c5, type 0=divide error, registers:
CR0: 0x8001003b, CR2: 0xbd775010, CR3: 0x00100000, CR4: 0x00000660
EAX: 0x00000000, EBX: 0x00000003, ECX: 0x00000020, EDX: 0x00000000
CR2: 0xbd775010, EBP: 0x83572938, ESI: 0x00000000, EDI: 0x00000000
EFL: 0x00010246, EIP: 0x0124d1c5, CS: 0x00000008, DS: 0x1a5e0010
Error code: 0x00000000

Backtrace (CPU 3), Frame : Return Address (4 potential args on stack)
0x83572748 : 0x21b510 (0x5d9514 0x8357277c 0x223978 0x0)
0x83572798 : 0x2aab59 (0x59aeec 0x124d1c5 0x0 0x59affa)
0x83572878 : 0x2a09b8 (0x83572890 0x0 0x83572938 0x124d1c5)
0x83572888 : 0x124d1c5 (0xe 0x48 0x10 0x2a0010)
0x83572938 : 0x124df47 (0x0 0x0 0x4 0x3)
0x83572a18 : 0x124e24a (0xd7b2c00 0xd7b2e90 0x21 0x29)
0x83572a38 : 0x122c672 (0xd7b2c00 0xd7b2e90 0x0 0x0)
0x83572a58 : 0x122ffb5 (0xd7b2c00 0x125c0000 0x83572b08 0x1261225)
0x83572b08 : 0x122cb9d (0xd7b2c00 0x0 0x83572b6c 0x83572b68)
0x83572b88 : 0x56a738 (0xd7b2c00 0x0 0x83572ddc 0x83572c14)
0x83572bd8 : 0x56afd7 (0x1267a00 0xd7b2c00 0x18027688 0x1)
0x83572c28 : 0x56b88b (0xd7b2c00 0x10 0x83572c70 0x0)
0x83572d48 : 0x285be0 (0xd7b2c00 0x10 0x18027688 0x1)
0x83573df8 : 0x21d8be (0x18027660 0x129bb5a0 0x1475d0 0x2677b)
0x83573e38 : 0x210a3e (0x18027600 0x0 0x18fd36c0 0x1b3ff540)
0x83573e98 : 0x216ca1 (0x18027600 0x0 0x0 0x0)
0x83573f18 : 0x294e25 (0x83573f44 0x0 0x0 0x0)
0x83573fc8 : 0x2a1028 (0xf45d400 0x1 0x10 0xf45d400)
Kernel Extensions in backtrace (with dependencies):
com.apple.driver.AppleIntelHDGraphics(6.2.6)@0x1224000->0x12d2fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x947000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0x97a000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x958000

BSD process name corresponding to current thread: iTunes

Mac OS version:
10J869

Kernel version:
Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)

System uptime in nanoseconds: 149023725900532
unloaded kexts:
com.apple.driver.AppleUSBUHCI 4.1.5 (addr 0x1421000, size 0x65536) - last unloaded 174131023304
loaded kexts:
com.eltima.ElmediaPlayer.kext 1.0
com.parallels.kext.prl_vnic 5.0 9370.589829
com.parallels.kext.prl_netbridge 5.0 9370.589829
com.parallels.kext.prl_usb_connect 5.0 9370.589829
com.parallels.kext.prl_hid_hook 5.0 9370.589829
com.parallels.kext.prl_hypervisor 5.0 9370.589829
com.Cycling74.driver.Soundflower 1.3.1
com.apple.driver.AppleHWSensor 1.9.3d0 - last loaded 35000768554
com.apple.driver.AGPM 100.12.19
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.driver.AudioAUUC 1.54
com.apple.driver.AppleHDA 1.9.9f12
com.apple.driver.AppleMikeyDriver 1.9.9f12
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.AppleUpstreamUserClient 3.5.4
com.apple.driver.AppleMCCSControl 1.0.17
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.kext.AppleSMCLMU 1.5.0d3
com.apple.GeForce 6.2.6
com.apple.driver.ACPI_SMC_PlatformPlugin 4.5.0d5
com.apple.driver.AppleLPC 1.4.12
com.apple.driver.AppleGraphicsControl 2.8.68
com.apple.driver.AppleIntelHDGraphics 6.2.6
com.apple.driver.AppleIntelHDGraphicsFB 6.2.6
com.apple.driver.AppleUSBTCButtons 200.3.2
com.apple.driver.AppleUSBTCKeyboard 200.3.2
com.apple.driver.AppleIRController 303.8
com.apple.driver.AppleUSBCardReader 2.5.8
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.iokit.SCSITaskUserClient 2.6.5
com.apple.iokit.IOAHCIBlockStorage 1.6.3
com.apple.driver.AppleUSBHub 4.1.7
com.apple.driver.AppleFWOHCI 4.7.1
com.apple.driver.AirPortBrcm43224 427.36.9
com.apple.iokit.AppleBCM5701Ethernet 2.3.9b6
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleUSBEHCI 4.1.8
com.apple.driver.AppleAHCIPort 2.1.5
com.apple.driver.AppleACPIButtons 1.3.5
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleHPET 1.5
com.apple.driver.AppleSMBIOS 1.6
com.apple.driver.AppleACPIEC 1.3.5
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 105.13.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagement 105.13.0
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.driver.DspFuncLib 1.9.9f12
com.apple.iokit.IOSurface 74.2
com.apple.iokit.IOBluetoothSerialManager 2.4.0f1
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.IOAudioFamily 1.8.0fc1
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleSMBusController 1.0.8d0
com.apple.nvidia.nv50hal 6.2.6
com.apple.iokit.IOFireWireIP 2.0.3
com.apple.driver.AppleHDAController 1.9.9f12
com.apple.iokit.IOHDAFamily 1.9.9f12
com.apple.NVDAResman 6.2.6
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleSMC 3.1.0d3
com.apple.driver.IOPlatformPluginFamily 4.5.0d5
com.apple.driver.AppleSMBusPCI 1.0.8d0
com.apple.iokit.IONDRVSupport 2.2
com.apple.iokit.IOGraphicsFamily 2.2
com.apple.driver.BroadcomUSBBluetoothHCIController 2.4.0f1
com.apple.driver.AppleUSBBluetoothHCIController 2.4.0f1
com.apple.iokit.IOBluetoothFamily 2.4.0f1
com.apple.driver.AppleUSBMultitouch 206.6
com.apple.iokit.IOUSBHIDDriver 4.1.5
com.apple.iokit.IOSCSIBlockCommandsDevice 2.6.5
com.apple.iokit.IOUSBMassStorageClass 2.6.5
com.apple.driver.AppleUSBMergeNub 4.1.8
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.5
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOAHCISerialATAPI 1.2.5
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.5
com.apple.iokit.IOUSBUserClient 4.1.5
com.apple.iokit.IOFireWireFamily 4.2.6
com.apple.iokit.IO80211Family 314.1.1
com.apple.iokit.IONetworkingFamily 1.10
com.apple.iokit.IOUSBFamily 4.1.8
com.apple.iokit.IOAHCIFamily 2.0.4
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOHIDFamily 1.6.5
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 289
com.apple.iokit.IOStorageFamily 1.6.2
com.apple.driver.AppleACPIPlatform 1.3.5
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0
System Profile:
Model: MacBookPro6,2, BootROM MBP61.0057.B0C, 2 processors, Intel Core i7, 2.66 GHz, 8 GB, SMC 1.58f16
Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB
Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB
Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.10.131.36.9)
Bluetooth: Version 2.4.0f1, 2 service, 19 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: Hitachi HTS725050A9A362, 465.76 GB
Serial ATA Device: MATSHITADVD-R UJ-898
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfd100000
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8507, 0xfd110000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0xfd120000
USB Device: Hub, 0x0424 (SMSC), 0x2514, 0xfa100000
USB Device: Internal Memory Card Reader, 0x05ac (Apple Inc.), 0x8403, 0xfa130000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x0236, 0xfa120000
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8218, 0xfa113000

[vickishome]

Second panic: Tue, Jun 7, 2011 at 23:17:18

Tue Jun 7 23:17:18 2011
panic(cpu 3 caller 0x2aab59): Kernel trap at 0x828301c5, type 0=divide error, registers:
CR0: 0x8001003b, CR2: 0xc3813010, CR3: 0x00100000, CR4: 0x00000660
EAX: 0x00000000, EBX: 0x00000003, ECX: 0x00000020, EDX: 0x00000000
CR2: 0xc3813010, EBP: 0xba1da938, ESI: 0x00000000, EDI: 0x00000000
EFL: 0x00010246, EIP: 0x828301c5, CS: 0x00000008, DS: 0x1f960010
Error code: 0x00000000

Backtrace (CPU 3), Frame : Return Address (4 potential args on stack)
0xba1da748 : 0x21b510 (0x5d9514 0xba1da77c 0x223978 0x0)
0xba1da798 : 0x2aab59 (0x59aeec 0x828301c5 0x0 0x59affa)
0xba1da878 : 0x2a09b8 (0xba1da890 0x0 0xba1da938 0x828301c5)
0xba1da888 : 0x828301c5 (0xe 0x48 0x10 0x2a0010)
0xba1da938 : 0x82830f47 (0x0 0x0 0x4 0x3)
0xba1daa18 : 0x8283124a (0x1d4b9000 0x1d4b9290 0x21 0x29)
0xba1daa38 : 0x8280f672 (0x1d4b9000 0x1d4b9290 0x0 0x0)
0xba1daa58 : 0x82812fb5 (0x1d4b9000 0x1d81b000 0xba1dab08 0x82844225)
0xba1dab08 : 0x8280fb9d (0x1d4b9000 0x0 0xba1dab6c 0xba1dab68)
0xba1dab88 : 0x56a738 (0x1d4b9000 0x0 0xba1daddc 0xba1dac14)
0xba1dabd8 : 0x56afd7 (0x8284aa00 0x1d4b9000 0xca1a388 0x1)
0xba1dac28 : 0x56b88b (0x1d4b9000 0x10 0xba1dac70 0x0)
0xba1dad48 : 0x285be0 (0x1d4b9000 0x10 0xca1a388 0x1)
0xba1dbdf8 : 0x21d8be (0xca1a360 0x1ea375a0 0x19f5d0 0x19307)
0xba1dbe38 : 0x210a3e (0xca1a300 0x0 0x1eff7f80 0x1f6d0540)
0xba1dbe98 : 0x216ca1 (0xca1a300 0x0 0x0 0x0)
0xba1dbf18 : 0x294e25 (0xba1dbf44 0x0 0x0 0x0)
0xba1dbfc8 : 0x2a1028 (0x1cf4b9a0 0x1 0x10 0x1cf4b9a0)
Kernel Extensions in backtrace (with dependencies):
com.apple.driver.AppleIntelHDGraphics(6.2.6)@0x82807000->0x828b5fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x7a776000
dependency: com.apple.iokit.IONDRVSupport(2.2)@0x81ef5000
dependency: com.apple.iokit.IOGraphicsFamily(2.2)@0x81f25000

BSD process name corresponding to current thread: iTunes

Mac OS version:
10J869

Kernel version:
Darwin Kernel Version 10.7.0: Sat Jan 29 15:17:16 PST 2011; root:xnu-1504.9.37~1/RELEASE_I386
System model name: MacBookPro6,2 (Mac-F22586C8)

System uptime in nanoseconds: 708986256092039
unloaded kexts:
com.apple.filesystems.msdosfs 1.6.3 (addr 0x824b2000, size 0x53248) - last unloaded 330037450747
loaded kexts:
com.parallels.kext.prl_vnic 5.0 9370.589829 - last loaded 267610497029
com.parallels.kext.prl_netbridge 5.0 9370.589829
com.parallels.kext.prl_usb_connect 5.0 9370.589829
com.parallels.kext.prl_hid_hook 5.0 9370.589829
com.eltima.ElmediaPlayer.kext 1.0
com.parallels.kext.prl_hypervisor 5.0 9370.589829
com.Cycling74.driver.Soundflower 1.3.1
com.apple.driver.AppleHWSensor 1.9.3d0
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AGPM 100.12.19
com.apple.driver.AudioAUUC 1.54
com.apple.driver.AppleMikeyHIDDriver 1.2.0
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleUpstreamUserClient 3.5.4
com.apple.driver.AppleMikeyDriver 1.9.9f12
com.apple.driver.AppleIntelHDGraphics 6.2.6
com.apple.driver.AudioIPCDriver 1.1.6
com.apple.driver.AppleHDA 1.9.9f12
com.apple.driver.AppleMCCSControl 1.0.17
com.apple.driver.AppleIntelHDGraphicsFB 6.2.6
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.iokit.AppleBCM5701Ethernet 2.3.9b6
com.apple.kext.AppleSMCLMU 1.5.0d3
com.apple.driver.AppleGraphicsControl 2.8.68
com.apple.GeForce 6.2.6
com.apple.driver.AirPortBrcm43224 427.36.9
com.apple.driver.ACPI_SMC_PlatformPlugin 4.5.0d5
com.apple.driver.AppleLPC 1.4.12
com.apple.driver.AppleUSBTCButtons 200.3.2
com.apple.driver.AppleUSBCardReader 2.5.8
com.apple.driver.AppleUSBTCKeyboard 200.3.2
com.apple.driver.AppleIRController 303.8
com.apple.iokit.SCSITaskUserClient 2.6.5
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.iokit.IOAHCIBlockStorage 1.6.3
com.apple.driver.AppleUSBHub 4.1.7
com.apple.driver.AppleEFINVRAM 1.4.0
com.apple.driver.AppleUSBEHCI 4.1.8
com.apple.driver.AppleFWOHCI 4.7.1
com.apple.driver.AppleAHCIPort 2.1.5
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.driver.AppleACPIButtons 1.3.5
com.apple.driver.AppleRTC 1.3.1
com.apple.driver.AppleHPET 1.5
com.apple.driver.AppleSMBIOS 1.6
com.apple.driver.AppleACPIEC 1.3.5
com.apple.driver.AppleAPIC 1.4
com.apple.driver.AppleIntelCPUPowerManagementClient 105.13.0
com.apple.security.sandbox 1
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagement 105.13.0
com.apple.driver.AppleProfileReadCounterAction 17
com.apple.driver.AppleProfileTimestampAction 10
com.apple.driver.AppleProfileThreadInfoAction 14
com.apple.driver.AppleProfileRegisterStateAction 10
com.apple.driver.AppleProfileKEventAction 10
com.apple.driver.AppleProfileCallstackAction 20
com.apple.iokit.IOSurface 74.2
com.apple.iokit.IOBluetoothSerialManager 2.4.0f1
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.driver.DspFuncLib 1.9.9f12
com.apple.iokit.IOAudioFamily 1.8.0fc1
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleSMBusController 1.0.8d0
com.apple.iokit.IOFireWireIP 2.0.3
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleHDAController 1.9.9f12
com.apple.iokit.IOHDAFamily 1.9.9f12
com.apple.iokit.IO80211Family 314.1.1
com.apple.iokit.IONetworkingFamily 1.10
com.apple.driver.AppleSMC 3.1.0d3
com.apple.driver.IOPlatformPluginFamily 4.5.0d5
com.apple.driver.AppleSMBusPCI 1.0.8d0
com.apple.nvidia.nv50hal 6.2.6
com.apple.NVDAResman 6.2.6
com.apple.iokit.IONDRVSupport 2.2
com.apple.iokit.IOGraphicsFamily 2.2
com.apple.driver.BroadcomUSBBluetoothHCIController 2.4.0f1
com.apple.driver.AppleUSBBluetoothHCIController 2.4.0f1
com.apple.iokit.IOBluetoothFamily 2.4.0f1
com.apple.iokit.IOUSBMassStorageClass 2.6.5
com.apple.iokit.IOSCSIBlockCommandsDevice 2.6.5
com.apple.driver.AppleUSBMultitouch 206.6
com.apple.iokit.IOUSBHIDDriver 4.1.5
com.apple.driver.AppleUSBMergeNub 4.1.8
com.apple.driver.AppleUSBComposite 3.9.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.5
com.apple.iokit.IOBDStorageFamily 1.6
com.apple.iokit.IODVDStorageFamily 1.6
com.apple.iokit.IOCDStorageFamily 1.6
com.apple.driver.XsanFilter 402.1
com.apple.iokit.IOAHCISerialATAPI 1.2.5
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.5
com.apple.iokit.IOUSBUserClient 4.1.5
com.apple.iokit.IOFireWireFamily 4.2.6
com.apple.driver.AppleEFIRuntime 1.4.0
com.apple.iokit.IOUSBFamily 4.1.8
com.apple.iokit.IOAHCIFamily 2.0.4
com.apple.iokit.IOHIDFamily 1.6.5
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.TMSafetyNet 6
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 289
com.apple.iokit.IOStorageFamily 1.6.2
com.apple.driver.AppleACPIPlatform 1.3.5
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0

[soho]

Kernel panics are invariably hardware based...do you have anything external plugged in
?

[DeltaMac]

I don't think that soho meant to say that kernel panics are invariably hardware based.
That leads to the inaccurate conclusion that any kernel panic is caused by faulty hardware, which isn't always true.
in this case, probably outdated, or incorrect drivers.

To help eliminate hardware problems, disconnect any external devices, and run your Hardware test - boot to your OS X restore DVD while holding the letter D. You should boot to the hardware test. Run both the standard and the extended tests.

What are you using that uses USB connections, including any external USB hubs?

[soho]

DeltaMac...well I sort of did mean it as I've had many KP caused by external devices...anyway I was just making sure he disconnects any external devices as a test.

[vickishome]

Thanks, guys, I understand what you're both saying. In this case, I'm not running any external devices. I'm plugged into the power and that's it. Everything else is either internal to my MBP or is wireless (airport).

I won't be able to run the tests just yet, but I'll let you know what I find when I do run them. It'll probably be a day or two.

[hayne]

From the kernel modules mentioned in the panic.log in the "Kernel Extensions in backtrace" section, it looks like there might be a problem with your graphics card. Or it might just be bad (corrupted?) drivers.

[appleman_design]

I second that hayne's…
do a archive and install from your installer DVD, and save user data check box.

[vickishome]

A graphics related issue would fit. This last panic, I was watching a podcast on iTunes (the new Apple WWDC in fact) and had just started up Chrome. IIRC, the other panic occurred under similar circumstances.

Is there any way of testing for a bad/corrupted driver or testing the graphics card? I'd prefer to actually find the problem so I'll know I've fixed it. Otherwise, I'd have to wait for weeks to see if I don't get a panic to decide it's fixed.

[hayne]

I think the Apple Hardware Test mentioned by DeltaMac above is your best bet.

[vickishome]

Great, I'll do that. Thanks! :)