Kernel Panic due to com.apple.iokit.IOHIDFamily(1.7.1) ?

my iMac crashed quite often recently.

Everytime is crash the log shows ''com.apple.iokit.IOHIDFamily(1.7.1)'' in backtrace
(not sure what does that mean... I have no idea about that)

Can anyone help me find out the problem, please?

Here is my hardware overview: (not sure how much I should provide)

Model Identifier: iMac10,1

Processor Name: Intel Core 2 Duo

Processor Speed:3.06 GHz

Number of Processors: 1

Total Number of Cores: 2

L2 Cache: 3 MB

Memory: 12 GB

Bus Speed: 1.07 GHz

Boot ROM Version: IM101.00CC.B00

SMC Version (system): 1.53f13

Here is the log:

Fri May 25 13:15:35 2012

panic(cpu 1 caller 0xffffff80002c473a): Kernel trap at 0xffffff7f80aaddaa, type 13=general protection, registers:

CR0: 0x000000008001003b, CR2: 0x000000010070a000, CR3: 0x0000000000100000, CR4: 0x0000000000000660

RAX: 0x0000000010000000, RBX: 0x010038801aefafc0, RCX: 0x0000000000000001, RDX: 0x0000000000000000

RSP: 0xffffff815fc03df0, RBP: 0xffffff815fc03e30, RSI: 0x000000000000003c, RDI: 0xffffff801b290000

R8: 0x0000000000000001, R9: 0x0000000000000001, R10: 0x000096338b60e6cb, R11: 0xffffff80006400b4

R12: 0x0000000000000000, R13: 0xffffff801b290000, R14: 0x0000000000000019, R15: 0x0000000000000000

RFL: 0x0000000000010203, RIP: 0xffffff7f80aaddaa, CS: 0x0000000000000008, SS: 0x0000000000000010

CR2: 0x000000010070a000, Error code: 0x0000000000000000, Faulting CPU: 0x1

Backtrace (CPU 1), Frame : Return Address

0xffffff815fc03aa0 : 0xffffff8000220792

0xffffff815fc03b20 : 0xffffff80002c473a

0xffffff815fc03cd0 : 0xffffff80002da0cd

0xffffff815fc03cf0 : 0xffffff7f80aaddaa

0xffffff815fc03e30 : 0xffffff7f80aae126

0xffffff815fc03e70 : 0xffffff7f80aae670

0xffffff815fc03ea0 : 0xffffff7f80aaedaf

0xffffff815fc03ef0 : 0xffffff800063c5b6

0xffffff815fc03f30 : 0xffffff800063b330

0xffffff815fc03f70 : 0xffffff800063b1d4

0xffffff815fc03fb0 : 0xffffff8000820057

Kernel Extensions in backtrace:

com.apple.iokit.IOHIDFamily(1.7.1)[D78939C1-7812-3ABF-93E5-1281B95E9129]@0xffff ff7f80a87000->0xffffff7f80af1fff

dependency: com.apple.driver.AppleKeyStore(28.18)[201EABF3-2C1E-3F7D-9EEF-F3C62C1F2C71]@0xf fffff7f80a7b000

BSD process name corresponding to current thread: kernel_task

Mac OS version:

11E53

Kernel version:

Darwin Kernel Version 11.4.0: Mon Apr 9 19:32:15 PDT 2012; root:xnu-1699.26.8~1/RELEASE_X86_64

Kernel UUID: A8ED611D-FB0F-3729-8392-E7A32C5E7D74

System model name: iMac10,1 (Mac-F2268DC8)

System uptime in nanoseconds: 165148125981406

last loaded kext at 165143527822369: at.obdev.nke.LittleSnitch 2.3.19 (addr 0xffffff7f80b67000, size 299008)

last unloaded kext at 162123479420228: at.obdev.nke.LittleSnitch 2.3.19 (addr 0xffffff7f80b67000, size 286720)

loaded kexts:

at.obdev.nke.LittleSnitch 2.3.19

com.parallels.kext.prl_vnic 7.0 15094.749908

com.parallels.kext.prl_netbridge 7.0 15094.749908

com.parallels.kext.prl_hid_hook 7.0 15094.749908

com.parallels.kext.prl_hypervisor 7.0 15094.749908

com.parallels.kext.prl_usb_connect 7.0 15094.749908

com.Cycling74.driver.Soundflower 1.5.1

com.globaldelight.driver.BoomDevice 1.1

com.apple.filesystems.smbfs 1.7.2

com.apple.driver.AppleIntelProfile 85.2

com.apple.driver.AppleBluetoothMultitouch 70.12

com.apple.driver.AppleHWSensor 1.9.5d0

com.apple.driver.AudioAUUC 1.59

com.apple.driver.AGPM 100.12.42

com.apple.driver.AppleMikeyHIDDriver 122

com.apple.driver.AppleHDA 2.2.0f3

com.apple.driver.AppleMikeyDriver 2.2.0f3

com.apple.driver.AppleUpstreamUserClient 3.5.9

com.apple.driver.AppleMCCSControl 1.0.26

com.apple.kext.ATIFramebuffer 7.1.8

com.apple.ATIRadeonX2000 7.1.8

com.apple.iokit.IOUserEthernet 1.0.0d1

com.apple.iokit.IOBluetoothSerialManager 4.0.5f11

com.apple.Dont_Steal_Mac_OS_X 7.0.0

com.apple.driver.AudioIPCDriver 1.2.2

com.apple.driver.ACPI_SMC_PlatformPlugin 5.0.0d0

com.apple.driver.AppleLPC 1.5.8

com.apple.driver.AppleBacklight 170.1.9

com.apple.filesystems.autofs 3.0

com.apple.driver.BroadcomUSBBluetoothHCIController 4.0.5f11

com.apple.driver.AppleIRController 312

com.apple.driver.AppleUSBCardReader 3.0.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1

com.apple.BootCache 33

com.apple.iokit.SCSITaskUserClient 3.2.0

com.apple.driver.XsanFilter 404

com.apple.iokit.IOAHCISerialATAPI 2.0.3

com.apple.iokit.IOAHCIBlockStorage 2.0.3

com.apple.driver.AppleFWOHCI 4.8.9

com.apple.driver.AppleAHCIPort 2.3.0

com.apple.driver.AirPort.Atheros40 504.64.2

com.apple.driver.AppleEFINVRAM 1.5.0

com.apple.nvenet 2.0.17

com.apple.driver.AppleUSBHub 4.5.0

com.apple.driver.AppleUSBEHCI 4.5.8

com.apple.driver.AppleUSBOHCI 4.4.5

com.apple.driver.AppleRTC 1.5

com.apple.driver.AppleHPET 1.6

com.apple.driver.AppleACPIButtons 1.5

com.apple.driver.AppleSMBIOS 1.8

com.apple.driver.AppleACPIEC 1.5

com.apple.driver.AppleAPIC 1.5

com.apple.driver.AppleIntelCPUPowerManagementClient 193.0.0

com.apple.nke.applicationfirewall 3.2.30

com.apple.security.quarantine 1.3

com.apple.driver.AppleIntelCPUPowerManagement 193.0.0

com.apple.driver.AppleProfileTimestampAction 85.2

com.apple.driver.AppleProfileThreadInfoAction 85.2

com.apple.driver.AppleProfileRegisterStateAction 85.2

com.apple.driver.AppleProfileReadCounterAction 85.2

com.apple.driver.AppleProfileKEventAction 85.2

com.apple.driver.AppleProfileCallstackAction 85.2

com.apple.iokit.AppleProfileFamily 85.2

com.apple.driver.AppleBluetoothHIDKeyboard 160.7

com.apple.driver.AppleHIDKeyboard 160.7

com.apple.driver.AppleMultitouchDriver 231.4

com.apple.driver.IOBluetoothHIDDriver 4.0.5f11

com.apple.driver.DspFuncLib 2.2.0f3

com.apple.iokit.IOFireWireIP 2.2.4

com.apple.kext.ATI4600Controller 7.1.8

com.apple.kext.ATISupport 7.1.8

com.apple.driver.AppleHDAController 2.2.0f3

com.apple.iokit.IOHDAFamily 2.2.0f3

com.apple.iokit.IOSurface 80.0.2

com.apple.iokit.IOSerialFamily 10.0.5

com.apple.iokit.IOAudioFamily 1.8.6fc17

com.apple.kext.OSvKernDSPLib 1.3

com.apple.driver.ApplePolicyControl 3.0.16

com.apple.driver.AppleSMBusController 1.0.10d0

com.apple.driver.AppleSMC 3.1.3d8

com.apple.driver.IOPlatformPluginLegacy 5.0.0d0

com.apple.driver.AppleSMBusPCI 1.0.10d0

com.apple.driver.AppleGraphicsControl 3.0.16

com.apple.driver.IOPlatformPluginFamily 5.1.0d17

com.apple.driver.AppleBacklightExpert 1.0.3

com.apple.iokit.IONDRVSupport 2.3.2

com.apple.iokit.IOGraphicsFamily 2.3.2

com.apple.kext.triggers 1.0

com.apple.driver.AppleUSBBluetoothHCIController 4.0.5f11

com.apple.iokit.IOBluetoothFamily 4.0.5f11

com.apple.iokit.IOUSBHIDDriver 4.4.5

com.apple.iokit.IOSCSIBlockCommandsDevice 3.2.0

com.apple.iokit.IOUSBMassStorageClass 3.0.1

com.apple.driver.AppleUSBMergeNub 4.5.3

com.apple.driver.AppleUSBComposite 4.5.8

com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.0

com.apple.iokit.IOBDStorageFamily 1.6

com.apple.iokit.IODVDStorageFamily 1.7

com.apple.iokit.IOCDStorageFamily 1.7

com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.0

com.apple.iokit.IOFireWireFamily 4.4.5

com.apple.iokit.IOAHCIFamily 2.0.8

com.apple.iokit.IO80211Family 420.3

com.apple.iokit.IONetworkingFamily 2.1

com.apple.iokit.IOUSBUserClient 4.5.8

com.apple.iokit.IOUSBFamily 4.5.8

com.apple.driver.NVSMU 2.2.9

com.apple.driver.AppleEFIRuntime 1.5.0

com.apple.iokit.IOHIDFamily 1.7.1

com.apple.iokit.IOSMBusFamily 1.1

com.apple.security.sandbox 177.5

com.apple.kext.AppleMatch 1.0.0d1

com.apple.security.TMSafetyNet 7

com.apple.driver.DiskImages 331.6

com.apple.iokit.IOStorageFamily 1.7.1

com.apple.driver.AppleKeyStore 28.18

com.apple.driver.AppleACPIPlatform 1.5

com.apple.iokit.IOPCIFamily 2.6.8

com.apple.iokit.IOACPIFamily 1.4