I've been having the same trouble, but it only started recenlty. Happens when I use Digi CoreAudio Manager. I am on a 13-inch thunderbolt macbook pro, running 10.8.2. This is ridiculous Apple, you need to get your kernel together.
Interval Since Last Panic Report: 815977 sec
Panics Since Last Report: 1
Anonymous UUID: 5A736979-7927-6068-6AF9-CE0219F74D45
Sat Nov 24 15:21:01 2012
panic(cpu 3 caller 0xffffff802802c151): "Spinlock acquisition timed out: lock=0xffffff80286b92f8, lock owner thread=0xffffff803a6cfaa0, current_thread: 0xffffff803aaa4550, lock owner active on CPU 0x0, current owner: 0xffffff803a6cfaa0"@/SourceCache/xnu/xnu-2050.18.24/osfmk/i386/locks_i386.c:363
Backtrace (CPU 3), Frame : Return Address
0xffffff81196c3370 : 0xffffff802801d626
0xffffff81196c33e0 : 0xffffff802802c151
0xffffff81196c3420 : 0xffffff802802c0d9
0xffffff81196c3440 : 0xffffff80280419a3
0xffffff81196c3490 : 0xffffff8028138b8c
0xffffff81196c3500 : 0xffffff80281426f5
0xffffff81196c3560 : 0xffffff802813a7e7
0xffffff81196c3680 : 0xffffff80281d0508
0xffffff81196c3970 : 0xffffff80281dc295
0xffffff81196c3a90 : 0xffffff80281dbac3
0xffffff81196c3ce0 : 0xffffff802839813a
0xffffff81196c3dd0 : 0xffffff80283a08ad
0xffffff81196c3ed0 : 0xffffff80283a0535
0xffffff81196c3f60 : 0xffffff80283e1533
0xffffff81196c3fb0 : 0xffffff80280cea1d
BSD process name corresponding to current thread: steam
Mac OS version:
12C60
Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide: 0x0000000027e00000
Kernel text base: 0xffffff8028000000
System model name: MacBookPro8,1 (Mac-94245B3640C91C81)
System uptime in nanoseconds: 4571360704231
last loaded kext at 122785521415: com.apple.filesystems.smbfs 1.8 (addr 0xffffff7fa86ec000, size 229376)
last unloaded kext at 159420881225: com.apple.driver.AppleUSBUHCI 5.2.5 (addr 0xffffff7fa8a42000, size 65536)
loaded kexts:
com.paceap.kext.pacesupport.snowleopard 5.8
com.splashtop.driver.SRXFrameBufferConnector 1.4
com.splashtop.driver.SRXDisplayCard 1.4
com.Cycling74.driver.Soundflower 1.5.2
com.digidesign.iokit.DigiDal 9.0.6f4
com.globaldelight.driver.BoomDevice 1.1
com.rim.driver.BlackBerryUSBDriverInt 0.0.74
com.apple.filesystems.smbfs 1.8
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AGPM 100.12.69
com.apple.driver.AppleMikeyHIDDriver 122
com.apple.driver.AppleHDA 2.3.1f2
com.apple.driver.AppleSMCLMU 2.0.2d0
com.apple.driver.AppleSMCPDRC 1.0.0
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport 4.0.9f33
com.apple.driver.AppleUpstreamUserClient 3.5.10
com.apple.driver.AudioAUUC 1.60
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.iokit.IOBluetoothSerialManager 4.0.9f33
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.ApplePolicyControl 3.2.11
com.apple.driver.SMCMotionSensor 3.0.2d6
com.apple.driver.AppleIntelHD3000Graphics 8.0.0
com.apple.driver.AppleBacklight 170.2.3
com.apple.driver.AppleMCCSControl 1.0.33
com.apple.driver.AppleLPC 1.6.0
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleIntelSNBGraphicsFB 8.0.0
com.apple.driver.AppleMikeyDriver 2.3.1f2
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleUSBTCButtons 235.4
com.apple.driver.AppleUSBTCKeyboard 235.4
com.apple.driver.AppleIRController 320.15
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 34
com.apple.iokit.SCSITaskUserClient 3.5.1
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.2.2
com.apple.driver.AppleUSBHub 5.2.5
com.apple.driver.AirPort.Brcm4331 602.15.22
com.apple.driver.AppleSDXC 1.2.2
com.apple.driver.AppleFWOHCI 4.9.6
com.apple.driver.AppleUSBEHCI 5.4.0
com.apple.iokit.AppleBCM5701Ethernet 3.2.5b3
com.apple.driver.AppleAHCIPort 2.4.1
com.apple.driver.AppleEFINVRAM 1.6.1
com.apple.driver.AppleSmartBatteryManager 161.0.0
com.apple.driver.AppleRTC 1.5
com.apple.driver.AppleACPIButtons 1.6
com.apple.driver.AppleHPET 1.7
com.apple.driver.AppleSMBIOS 1.9
com.apple.driver.AppleACPIEC 1.6
com.apple.driver.AppleAPIC 1.6
com.apple.driver.AppleIntelCPUPowerManagementClient 196.0.0
com.apple.nke.applicationfirewall 4.0.39
com.apple.security.quarantine 2
com.apple.driver.AppleIntelCPUPowerManagement 196.0.0
com.apple.driver.DspFuncLib 2.3.1f2
com.apple.driver.AppleHDAController 2.3.1f2
com.apple.iokit.IOHDAFamily 2.3.1f2
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport 4.0.9f33
com.apple.iokit.IOSurface 86.0.3
com.apple.iokit.IOSerialFamily 10.0.6
com.apple.iokit.IOBluetoothFamily 4.0.9f33
com.apple.iokit.IOAudioFamily 1.8.9fc10
com.apple.kext.OSvKernDSPLib 1.6
com.apple.driver.AppleGraphicsControl 3.2.11
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.iokit.IONDRVSupport 2.3.5
com.apple.kext.triggers 1.0
com.apple.iokit.IOGraphicsFamily 2.3.5
com.apple.driver.AppleSMBusController 1.0.10d0
com.apple.driver.AppleSMBusPCI 1.0.10d0
com.apple.driver.AppleSMC 3.1.4d2
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.2.0d16
com.apple.driver.AppleUSBMultitouch 235.7
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.driver.AppleThunderboltDPInAdapter 1.8.5
com.apple.driver.AppleThunderboltDPAdapterFamily 1.8.5
com.apple.driver.AppleThunderboltPCIUpAdapter 1.2.5
com.apple.driver.AppleThunderboltPCIDownAdapter 1.2.5
com.apple.driver.AppleUSBMergeNub 5.2.5
com.apple.driver.CoreStorage 274.7
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.5.1
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOAHCISerialATAPI 2.5.0
com.apple.iokit.IOUSBUserClient 5.2.5
com.apple.driver.AppleThunderboltNHI 1.6.0
com.apple.iokit.IOThunderboltFamily 2.1.1
com.apple.iokit.IO80211Family 500.15
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOEthernetAVBController 1.0.2b1
com.apple.iokit.IONetworkingFamily 3.0
com.apple.iokit.IOAHCIFamily 2.2.1
com.apple.driver.AppleEFIRuntime 1.6.1
com.apple.iokit.IOHIDFamily 1.8.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 220
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.DiskImages 344
com.apple.driver.AppleKeyStore 28.21
com.apple.iokit.IOUSBMassStorageClass 3.5.0
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.iokit.IOSCSIBlockCommandsDevice 3.5.1
com.apple.iokit.IOStorageFamily 1.8
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.1
com.apple.iokit.IOUSBFamily 5.4.0
com.apple.driver.AppleACPIPlatform 1.6
com.apple.iokit.IOPCIFamily 2.7.2
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
Model: MacBookPro8,1, BootROM MBP81.0047.B27, 2 processors, Intel Core i5, 2.3 GHz, 8 GB, SMC 1.68f98
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 512 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334448302D4348392020
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353237334448302D4348392020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xD6), Broadcom BCM43xx 1.0 (5.106.98.81.22)
Bluetooth: Version 4.0.9f33 10885, 2 service, 18 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
PCI Card: pci1b21,612, sppci_ahci, Thunderbolt@105,0,0
Serial ATA Device: TOSHIBA MK5065GSXF, 500.11 GB
Serial ATA Device: MATSHITADVD-R UJ-898
Serial ATA Device: ST1000LM024 HN-M101MBB, 1 TB
USB Device: FaceTime HD Camera (Built-in), apple_vendor_id, 0x8509, 0xfa200000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2513, 0xfa100000 / 2
USB Device: Microsoft® Nano Transceiver v2.0, 0x045e (Microsoft Corporation), 0x0745, 0xfa130000 / 6
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0245, 0xfa120000 / 5
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x821a, 0xfa113000 / 8
USB Device: hub_device, 0x0424 (SMSC), 0x2513, 0xfd100000 / 2
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd110000 / 3