Grey screen with restart directions

[bhurd07]

Hi All! I am in panic mode right now.. I was working and I had a grey screen come across my imac that read restart in multiple languages.. I have never had this happen before here is the panic report


Interval Since Last Panic Report: 74782978 sec
Panics Since Last Report: 1
Anonymous UUID: BC407D64-BD26-4B7B-A2C4-0306BA5C11E1

Sat Jul 28 12:12:14 2012
panic(cpu 0 caller 0x001DDE36): "vnode_rele_ext: vp 0xc2dfac0 kusecount(1) out of balance with usecount(0)\n"@/SourceCache/xnu/xnu-1228.15.4/bsd/vfs/vfs_subr.c:1622
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x47a778b8 : 0x12b4c6 (0x45f91c 0x47a778ec 0x13355c 0x0)
0x47a77908 : 0x1dde36 (0x46eac4 0xc2dfac0 0x1 0x0)
0x47a77948 : 0x1ddfaf (0xc2dfac0 0x0 0x0 0x0)
0x47a77968 : 0x559ee37b (0xc2dfac0 0x5a 0x47a779a0 0x47a77ab0)
0x47a77988 : 0x559ef112 (0x6ac7000 0x5af2a10 0x20 0x559f0944)
0x47a77b68 : 0x559f0108 (0xc2dfac0 0xa189104 0x55d8f68 0x5608604)
0x47a77b88 : 0x35e45a (0x55d8f68 0x0 0x6 0xa189104)
0x47a77bc8 : 0x1da92b (0x5608604 0x55d8f68 0x6 0xa189104)
0x47a77c18 : 0x1ed753 (0xc2dfac0 0x0 0x6 0xa189104)
0x47a77c78 : 0x1e3bd4 (0x47a77d38 0x47a77cec 0x47a77e8c 0xa189104)
0x47a77d08 : 0x1e4253 (0xa189104 0x47a77d38 0x102 0x47a77e8c)
0x47a77f78 : 0x3e3a7f (0x58520e4 0xa189000 0xa189044 0x0)
0x47a77fc8 : 0x1a1c0a (0xb3f0de0 0x0 0x1a40b5 0x63d42e8)
No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xb071a148
Kernel loadable modules in backtrace (with dependencies):
com.sophos.kext.sav(8.0.4)@0x559ed000->0x559f1fff

BSD process name corresponding to current thread: mds

Mac OS version:
9L31a

Kernel version:
Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386
System model name: iMac8,1 (Mac-F227BEC8)

System uptime in nanoseconds: 91706030837557
unloaded kexts:
com.apple.driver.iTunesPhoneDriver 1.0 - last unloaded 9306163805410
loaded kexts:
com.wdc.driver.USBHP 1.0.11
com.sophos.kext.sav 8.0.4
com.f-secure.kext.fsauth 1.0.0d1
com.apple.driver.iTunesPhoneDriver 1.0 - last loaded 9241523000496
com.apple.iokit.IOBluetoothSerialManager 2.1.9f10
com.apple.filesystems.autofs 2.0.2
com.apple.driver.AppleHDA 1.7.1a2
com.apple.driver.AppleUpstreamUserClient 2.7.5
com.apple.kext.ATY_Hypoprion 5.4.8
com.apple.driver.AppleHWSensor 1.9d0
com.apple.Dont_Steal_Mac_OS_X 6.0.3
com.apple.driver.AppleHDAController 1.7.1a2
com.apple.iokit.IOFireWireIP 1.7.7
com.apple.driver.AppleIRController 113
com.apple.driver.AudioIPCDriver 1.0.6
com.apple.driver.ACPI_SMC_PlatformPlugin 3.4.0a17
com.apple.driver.AppleLPC 1.3.1
com.apple.driver.AppleBacklight 1.6.0
com.apple.ATIRadeonX2000 5.4.8
com.apple.driver.BroadcomUSBBluetoothHCIController 2.1.9f10
com.apple.driver.AppleHIDKeyboard 1.0.9b4
com.apple.driver.AppleUSBMergeNub 3.5.2
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.1.1
com.apple.iokit.SCSITaskUserClient 2.1.1
com.apple.driver.XsanFilter 2.7.91
com.apple.iokit.IOAHCIBlockStorage 1.2.2
com.apple.iokit.IOATAPIProtocolTransport 1.5.3
com.apple.iokit.AppleYukon2 3.1.13b2
com.apple.driver.AirPortBrcm43xx 367.91.22
com.apple.driver.AppleUSBHub 3.4.9
com.apple.iokit.IOUSBUserClient 3.5.2
com.apple.driver.AppleFWOHCI 3.9.7
com.apple.driver.AppleAHCIPort 1.7.0
com.apple.driver.AppleIntelPIIXATA 2.0.1
com.apple.driver.AppleUSBEHCI 3.4.6
com.apple.driver.AppleUSBUHCI 3.5.2
com.apple.driver.AppleEFINVRAM 1.2.0
com.apple.driver.AppleRTC 1.2.3
com.apple.driver.AppleHPET 1.4
com.apple.driver.AppleACPIPCI 1.2.5
com.apple.driver.AppleACPIButtons 1.2.5
com.apple.driver.AppleSMBIOS 1.4
com.apple.driver.AppleACPIEC 1.2.5
com.apple.driver.AppleAPIC 1.4
com.apple.security.seatbelt 107.12
com.apple.nke.applicationfirewall 1.8.77
com.apple.security.TMSafetyNet 3
com.apple.driver.AppleIntelCPUPowerManagement 76.2.0
com.apple.driver.DiskImages 199
com.apple.BootCache 30.4
com.apple.iokit.IOSerialFamily 9.4
com.apple.driver.DspFuncLib 1.7.1a2
com.apple.iokit.IOHDAFamily 1.7.1a2
com.apple.iokit.IOAudioFamily 1.6.9fc5
com.apple.kext.OSvKernDSPLib 1.1
com.apple.driver.IOPlatformPluginFamily 3.4.0a17
com.apple.driver.AppleSMC 2.3.1d1
com.apple.iokit.IONDRVSupport 1.7.3
com.apple.iokit.IOGraphicsFamily 1.7.3
com.apple.driver.AppleUSBBluetoothHCIController 2.1.9f10
com.apple.iokit.IOBluetoothFamily 2.1.9f10
com.apple.iokit.IOUSBHIDDriver 3.4.6
com.apple.iokit.IOUSBMassStorageClass 2.0.8
com.apple.driver.AppleUSBComposite 3.2.0
com.apple.iokit.IOSCSIBlockCommandsDevice 2.1.1
com.apple.iokit.IOBDStorageFamily 1.5
com.apple.iokit.IODVDStorageFamily 1.5
com.apple.iokit.IOCDStorageFamily 1.5
com.apple.iokit.IOSCSIArchitectureModelFamily 2.1.1
com.apple.iokit.IO80211Family 216.1
com.apple.iokit.IONetworkingFamily 1.6.1
com.apple.iokit.IOFireWireFamily 3.4.9
com.apple.iokit.IOAHCIFamily 1.5.0
com.apple.iokit.IOATAFamily 2.0.1
com.apple.iokit.IOUSBFamily 3.5.2
com.apple.driver.AppleEFIRuntime 1.2.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.iokit.IOStorageFamily 1.5.6
com.apple.iokit.IOHIDFamily 1.5.5
com.apple.driver.AppleACPIPlatform 1.2.5
com.apple.iokit.IOACPIFamily 1.2.0
com.apple.iokit.IOPCIFamily 2.6

 

[GGJstudios]

If you get a screen that looks like this:

It's called a kernel panic. If it doesn't happen again, or very infrequently, don't worry about it.

In most cases, kernel panics are not caused by an issue with your Mac. They are most likely caused by an issue external to your Mac. If the kernel panic doesn't happen again within a few weeks, you don't need to troubleshoot further.

"You need to restart your computer" (kernel panic) message appears (Mac OS X v10.5, 10.6)
Mac OS X 10.7 Help: If “You need to restart your computer” appears
Mac OS X: How to log a kernel panic
Understanding and Debugging Kernel Panics
Resolving Kernel Panics