Kernel Panic after logic board replacement

I took my computer for a logic board replacement a few weeks ago. 1 day after getting it back I got a kernel panic, and upgraded to the 10.6.2. I never had any more panic issues or any other issues whatsoever.

Until now, nearly 2 weeks later. Do you think the new logic board is bad? Here is the report from the kernel panic (incase anything pops out at you):

Interval Since Last Panic Report: 546749 sec
Panics Since Last Report: 1
Anonymous UUID: 9112C184-610B-4F4E-9B54-B603A7BCBBCC

Mon Feb 8 23:15:12 2010
panic(cpu 0 caller 0x226820): "thread_invoke: preemption_level -1, possible cause: unlocking an unlocked mutex or spinlock"@/SourceCache/xnu/xnu-1486.2.11/osfmk/kern/sched_prim.c:1471
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x4aed3e28 : 0x21b2bd (0x5cf868 0x4aed3e5c 0x223719 0x0)
0x4aed3e78 : 0x226820 (0x5876cc 0xffffffff 0x587664 0x225ec4)
0x4aed3ef8 : 0x226f27 (0x5ff801c 0x1 0x0 0x0)
0x4aed3f68 : 0x218f16 (0x29d655 0x0 0x1 0x4ee76a)
0x4aed3fa8 : 0x2a6a07 (0xffffffff 0x1 0x4aed3fc8 0x5ff11c4)
0x4aed3fc8 : 0x29d866 (0x0 0x1 0x10 0x5ff11c4)

BSD process name corresponding to current thread: mDNSResponder

Mac OS version:
10C540

Kernel version:
Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)

System uptime in nanoseconds: 39298285080144
unloaded kexts:
com.apple.driver.AppleFileSystemDriver 2.0 (addr 0xf03000, size 0x12288) - last unloaded 100135370714
loaded kexts:
com.cisco.nke.ipsec 2.0.1 - last loaded 39188358676
com.parallels.kext.Pvsvnic 3.0
org.virtualbox.kext.VBoxNetAdp 3.0.8
org.virtualbox.kext.VBoxNetFlt 3.0.8
org.virtualbox.kext.VBoxUSB 3.0.8
com.parallels.kext.vmmain 3.0
org.virtualbox.kext.VBoxDrv 3.0.8
com.parallels.kext.hypervisor 3.0
com.parallels.kext.Pvsnet 3.0
com.parallels.kext.ConnectUSB 3.0.0
com.apple.driver.AppleHWSensor 1.9.2d0
com.apple.filesystems.autofs 2.1.0
com.apple.driver.AppleHDA 1.7.9a4
com.apple.driver.AppleUpstreamUserClient 3.1.0
com.apple.driver.SMCMotionSensor 3.0.0d4
com.apple.GeForce 6.0.6
com.apple.kext.AppleSMCLMU 1.4.5d1
com.apple.Dont Steal_Mac_OSX 7.0.0
com.apple.driver.AudioIPCDriver 1.1.2
com.apple.driver.AppleIntelMeromProfile 19
com.apple.driver.ACPI SMCPlatformPlugin 4.0.1d0
com.apple.driver.AppleLPC 1.4.9
com.apple.driver.AppleBacklight 170.0.14
com.apple.driver.AirPort.Atheros 421.19.8
com.apple.driver.AppleUSBTrackpad 1.8.0b4
com.apple.driver.AppleUSBTCKeyEventDriver 1.8.0b4
com.apple.driver.AppleUSBTCKeyboard 1.8.0b4
com.apple.driver.AppleIRController 251.1.4
com.apple.iokit.SCSITaskUserClient 2.6.0
com.apple.BootCache 31
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.driver.AppleSmartBatteryManager 160.0.0
com.apple.iokit.IOAHCIBlockStorage 1.6.0
com.apple.driver.AppleAHCIPort 2.0.1
com.apple.driver.AppleUSBHub 3.8.4
com.apple.driver.AppleFWOHCI 4.4.0
com.apple.driver.AppleUSBEHCI 3.7.5
com.apple.driver.AppleUSBUHCI 3.7.5
com.apple.iokit.AppleYukon2 3.1.14b1
com.apple.driver.AppleEFINVRAM 1.3.0
com.apple.driver.AppleRTC 1.3
com.apple.driver.AppleHPET 1.4
com.apple.driver.AppleIntelPIIXATA 2.5.0
com.apple.driver.AppleACPIButtons 1.3
com.apple.driver.AppleSMBIOS 1.4
com.apple.driver.AppleACPIEC 1.3
com.apple.driver.AppleAPIC 1.4
com.apple.security.sandbox 0
com.apple.security.quarantine 0
com.apple.nke.applicationfirewall 2.1.11
com.apple.driver.AppleIntelCPUPowerManagementClient 96.0.0
com.apple.driver.AppleIntelCPUPowerManagement 96.0.0
com.apple.driver.DspFuncLib 1.7.9a4
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.nvidia.nv50hal 6.0.6
com.apple.NVDAResman 6.0.6
com.apple.iokit.IOSurface 73.0
com.apple.iokit.IOBluetoothSerialManager 2.2.4f3
com.apple.iokit.IOSerialFamily 10.0.3
com.apple.iokit.IOAudioFamily 1.7.2fc1
com.apple.kext.OSvKernDSPLib 1.3
com.apple.driver.AppleHDAController 1.7.9a4
com.apple.iokit.IOHDAFamily 1.7.9a4
com.apple.iokit.AppleProfileFamily 41
com.apple.driver.AppleSMC 3.0.1d2
com.apple.driver.IOPlatformPluginFamily 4.0.1d0
com.apple.iokit.IONDRVSupport 2.0
com.apple.iokit.IOGraphicsFamily 2.0
com.apple.iokit.IOFireWireIP 2.0.3
com.apple.iokit.IO80211Family 310.6
com.apple.driver.CSRUSBBluetoothHCIController 2.2.4f3
com.apple.driver.AppleUSBBluetoothHCIController 2.2.4f3
com.apple.iokit.IOBluetoothFamily 2.2.4f3
com.apple.iokit.IOUSBHIDDriver 3.8.4
com.apple.driver.AppleUSBMergeNub 3.8.5
com.apple.driver.AppleUSBComposite 3.7.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 2.6.0
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.IOATAPIProtocolTransport 2.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 2.6.0
com.apple.iokit.IOAHCIFamily 2.0.2
com.apple.iokit.IOUSBUserClient 3.8.5
com.apple.iokit.IOFireWireFamily 4.1.7
com.apple.iokit.IOUSBFamily 3.8.5
com.apple.iokit.IONetworkingFamily 1.9
com.apple.driver.AppleEFIRuntime 1.3.0
com.apple.iokit.IOATAFamily 2.5.0
com.apple.iokit.IOHIDFamily 1.6.1
com.apple.iokit.IOSMBusFamily 1.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 6
com.apple.driver.DiskImages 281
com.apple.iokit.IOStorageFamily 1.6
com.apple.driver.AppleACPIPlatform 1.3
com.apple.iokit.IOPCIFamily 2.6
com.apple.iokit.IOACPIFamily 1.3.0
Model: MacBookPro3,1, BootROM MBP31.0070.B07, 2 processors, Intel Core 2 Duo, 2.4 GHz, 2 GB, SMC 1.16f11
Graphics: NVIDIA GeForce 8600M GT, GeForce 8600M GT, PCIe, 256 MB
Memory Module: global_name
AirPort: spairport wireless_card_type_airportextreme (0x168C, 0x87), Atheros 5416: 2.0.19.8
Bluetooth: Version 2.2.4f3, 2 service, 0 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Network Service: Parallels NAT, Ethernet, en3
Network Service: Parallels Host-Guest, Ethernet, en2
PCI Card: pci168c,24, sppci_othernetwork, PCI Slot 5
Serial ATA Device: FUJITSU MHW2160BHPL, 149.05 GB
Parallel ATA Device: HL-DT-ST DVDRW GSA-S10N
USB Device: Built-in iSight, 0x05ac (Apple Inc.), 0x8502, 0xfd400000
USB Device: USB-PS/2 Optical Mouse, 0x046d (Logitech Inc.), 0xc045, 0x1d100000
USB Device: Apple Internal Keyboard / Trackpad, 0x05ac (Apple Inc.), 0x021a, 0x5d200000
USB Device: IR Receiver, 0x05ac (Apple Inc.), 0x8242, 0x5d100000
USB Device: Bluetooth USB Host Controller, 0x05ac (Apple Inc.), 0x8205, 0x1a100000