Need help diagnosing kernel panic error-10.7.5 2006 Mac Pro

The kernel panic went away when I removed my external firewire and usb drives. Thank you very much.

Sat Jan 25 17:47:28 2014
panic(cpu 2 caller 0x2ceabf): Kernel trap at 0x01c7338c, type 0=divide error, registers:
CR0: 0x8001003b, CR2: 0x72abbb00, CR3: 0x00100000, CR4: 0x00000660
EAX: 0x00000001, EBX: 0x00000000, ECX: 0x27dc1000, EDX: 0x00000000
CR2: 0x72abbb00, EBP: 0x94963cc8, ESI: 0x00000000, EDI: 0x00000000
EFL: 0x00010246, EIP: 0x01c7338c, CS: 0x00000008, DS: 0x00000010
Error code: 0x00000000

Backtrace (CPU 2), Frame : Return Address (4 potential args on stack)
0x94963ae8 : 0x2203de (0x6b08cc 0x94963b08 0x229fb0 0x0)
0x94963b18 : 0x2ceabf (0x6bd9e0 0x1c7338c 0x0 0x6bd8cd)
0x94963bc8 : 0x2e5564 (0x94963bf0 0x94963bd8 0x94963be8 0x60a3a6)
0x94963be8 : 0x1c7338c (0xe 0x10048 0x27190070 0x740010)
0x94963cc8 : 0x1c6bf71 (0x1000 0x0 0x0 0x0)
0x94963d38 : 0x1c6e666 (0x27dc1000 0x26ca03b0 0x8cc3f000 0x2ba)
0x94963d88 : 0x1c669da (0x28592280 0x27dc1000 0x8cc3f000 0x2ba)
0x94963dc8 : 0xa1127d (0x27dc1000 0x27dc1000 0x8cc3f000 0x2ba)
0x94963e08 : 0x1c62659 (0x27dc1000 0x27dc1000 0x8cc3f000 0x2ba)
0x94963e38 : 0x1c62ea3 (0x27dc1000 0x1c7364c 0x1c7363a 0x0)
0x94963e58 : 0x1c635f9 (0x27dc1000 0x0 0x94963e78 0x27dc1000)
0x94963e78 : 0x1c6510f (0x27dc0b80 0x27dc1000 0x284edac0 0x0)
0x94963ea8 : 0x1c62ebd (0x27dc0b80 0x28524800 0x1c7363a 0x28524800)
0x94963ec8 : 0x64bacd (0x28524800 0x284da600 0x94963ef8 0x609fea)
0x94963f18 : 0x64b836 (0x284da600 0x28524800 0x26c9cfc0 0x60a492)
0x94963f68 : 0x64c62d (0x284da600 0x26c9fd80 0x0 0xffffffff)
0x94963f98 : 0x64e454 (0x284da600 0x0 0x94963fb8 0x1)
0x94963fc8 : 0x2c7d0c (0x26ea8110 0x0 0x10 0x261820d0)
Kernel Extensions in backtrace:
com.apple.iokit.IOStorageFamily(1.7.2)[9164AEE7-BA92-45A2-BA9C-638B980193F1]@0x 9ff000->0xa22fff
com.apple.driver.AppleRAID(4.0.6)[2DB38C0A-C02F-4C5E-8038-7D4969A99726]@0x1c600 00->0x1c84fff
dependency: com.apple.iokit.IOStorageFamily(1.7.2)[9164AEE7-BA92-45A2-BA9C-638B980193F1]@0x 9ff000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
11G63

Kernel version:
Darwin Kernel Version 11.4.2: Thu Aug 23 16:26:45 PDT 2012; root:xnu-1699.32.7~1/RELEASE_I386
Kernel UUID: 859B45FB-14BB-35ED-B823-08393C63E13B
System model name: MacPro1,1 (Mac-F4208DC8)

System uptime in nanoseconds: 20244832865
last loaded kext at 19676394677: org.virtualbox.kext.VBoxNetAdp 4.2.1 (addr 0x9cc4d000, size 28672)
loaded kexts:
org.virtualbox.kext.VBoxNetAdp 4.2.1
org.virtualbox.kext.VBoxNetFlt 4.2.1
org.virtualbox.kext.VBoxUSB 4.2.1
org.virtualbox.kext.VBoxDrv 4.2.1
com.splashtop.driver.SRXFrameBufferConnector 1.6
com.splashtop.driver.SRXDisplayCard 1.6
com.Cycling74.driver.Soundflower 1.6.6
com.Newer-tech.kext.MAXPower_SAS_6G_RAID 1.3.0
com.apple.driver.AppleFireWireStorage 3.0.6
com.apple.driver.initioFWBridge 3.0.6
com.apple.driver.IOFireWireSerialBusProtocolSansPhysicalUnit 3.0.6
com.apple.driver.LSI_FW_500 3.0.6
com.apple.driver.Oxford_Semi 3.0.6
com.apple.driver.StorageLynx 3.0.6
com.apple.driver.AppleRAID 4.0.6
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AppleUpstreamUserClient 3.5.9
com.apple.driver.AppleMCCSControl 1.0.33
com.apple.driver.AppleHDAHardwareConfigDriver 2.2.5a5
com.apple.kext.ATIFramebuffer 7.3.2
com.apple.driver.AppleHDA 2.2.5a5
com.apple.driver.AudioAUUC 1.59
com.apple.driver.AppleTyMCEDriver 1.0.2d2
com.apple.ATIRadeonX2000 7.3.2
com.apple.driver.AppleUSBDisplays 323.3
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.0.8f17
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AudioIPCDriver 1.2.3
com.apple.driver.AppleMCEDriver 1.1.9
com.apple.driver.ApplePolicyControl 3.1.33
com.apple.driver.ACPI_SMC_PlatformPlugin 5.0.0d8
com.apple.driver.AppleLPC 1.6.0
com.apple.driver.CSRUSBBluetoothHCIController 4.0.8f17
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.1.0
com.apple.driver.CSRHIDTransitionDriver 4.0.8f17
com.apple.iokit.SCSITaskUserClient 3.2.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 33
com.apple.driver.AppleFWOHCI 4.9.0
com.apple.driver.AppleIntel8254XEthernet 2.1.3b1
com.apple.driver.AppleAHCIPort 2.3.1
com.apple.driver.AppleIntelPIIXATA 2.5.1
com.apple.iokit.AppleYukon2 3.2.2b1
com.apple.driver.AppleUSBHub 5.1.0
com.apple.driver.AppleEFINVRAM 1.6.1
com.apple.driver.AppleUSBEHCI 5.1.0
com.apple.driver.AppleUSBUHCI 5.1.0
com.apple.driver.AppleACPIButtons 1.5
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleHPET 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.5
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 195.0.0
com.apple.nke.applicationfirewall 3.2.30
com.apple.security.quarantine 1.4
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 195.0.0
com.apple.iokit.IOFireWireSerialBusProtocolTransport 2.1.0
com.apple.iokit.IOFireWireSBP2 4.2.0
com.apple.kext.triggers 1.0
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.driver.DspFuncLib 2.2.5a5
com.apple.kext.ATI2600Controller 7.3.2
com.apple.kext.ATISupport 7.3.2
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.iokit.IOSurface 80.0.2
com.apple.iokit.IOSerialFamily 10.0.5
com.apple.iokit.IOAudioFamily 1.8.6fc18
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleHDAController 2.2.5a5
com.apple.iokit.IOHDAFamily 2.2.5a5
com.apple.driver.AppleGraphicsControl 3.1.33
com.apple.iokit.IONDRVSupport 2.3.4
com.apple.iokit.IOGraphicsFamily 2.3.4
com.apple.driver.AppleSMC 3.1.3d10
com.apple.driver.IOPlatformPluginLegacy 5.0.0d8
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.IOPlatformPluginFamily 5.1.1d6
com.apple.iokit.IOSCSIBlockCommandsDevice 3.2.1
com.apple.driver.AppleUSBBluetoothHCIController 4.0.8f17
com.apple.iokit.IOBluetoothFamily 4.0.8f17
com.apple.iokit.IOUSBMassStorageClass 3.0.3
com.apple.driver.AppleFileSystemDriver 13
com.apple.iokit.IOUSBHIDDriver 5.0.0
com.apple.driver.AppleUSBComposite 5.0.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.2.1
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOATAPIProtocolTransport 3.0.0
com.apple.iokit.IOFireWireFamily 4.4.8
com.apple.iokit.IOSCSIParallelFamily 2.5.1
com.apple.iokit.IOSCSIArchitectureModelFamily 3.2.1
com.apple.iokit.IOAHCIFamily 2.0.8
com.apple.iokit.IOATAFamily 2.5.1
com.apple.iokit.IONetworkingFamily 2.1
com.apple.iokit.IOUSBUserClient 5.0.0
com.apple.iokit.IOUSBFamily 5.1.0
com.apple.driver.AppleEFIRuntime 1.6.1
com.apple.iokit.IOHIDFamily 1.7.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 177.11
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.DiskImages 331.7
com.apple.iokit.IOStorageFamily 1.7.2
com.apple.driver.AppleKeyStore 28.18
com.apple.driver.AppleACPIPlatform 1.5
com.apple.iokit.IOPCIFamily 2.7
com.apple.iokit.IOACPIFamily 1.4