Computer shut down twice. Any idea based on report?

[emerald`]

Can anyone tell me what's going on based on this?


Interval Since Last Panic Report: 7194654 sec
Panics Since Last Report: 1
Anonymous UUID: 43115761-E931-E325-9608-D7CA628E8C2E


Mon Jan 14 13:40:32 2013
panic(cpu 2 caller 0xffffff800aeb7bd5): Kernel trap at 0xffffff800aeacb47, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xffffff800c85df38, CR3: 0x000000001ef0b007, CR4: 0x00000000000606e0
RAX: 0x0000000000000000, RBX: 0xffffff801cc145c0, RCX: 0x0000000001510000, RDX: 0xffffff800c85df30
RSP: 0xffffff80fbbfbd60, RBP: 0xffffff80fbbfbd60, RSI: 0xffffff801d15f940, RDI: 0xffffff800c85df30
R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x0000000000000000, R11: 0x0000000000000000
R12: 0x0000000000000000, R13: 0xffffff801d15f940, R14: 0xffffff801d15f940, R15: 0x0000000000000000
RFL: 0x0000000000010286, RIP: 0xffffff800aeacb47, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0xffffff800c85df38, Error code: 0x0000000000000000, Fault CPU: 0x2


Backtrace (CPU 2), Frame : Return Address
0xffffff80fbbfba00 : 0xffffff800ae1d626
0xffffff80fbbfba70 : 0xffffff800aeb7bd5
0xffffff80fbbfbc40 : 0xffffff800aece4ed
0xffffff80fbbfbc60 : 0xffffff800aeacb47
0xffffff80fbbfbd60 : 0xffffff800b1ec250
0xffffff80fbbfbd80 : 0xffffff800b1ec325
0xffffff80fbbfbda0 : 0xffffff800b1f20d8
0xffffff80fbbfbde0 : 0xffffff800b227c23
0xffffff80fbbfbe00 : 0xffffff800b2321e1
0xffffff80fbbfbe10 : 0xffffff800b263b28
0xffffff80fbbfbe50 : 0xffffff800ae93f72
0xffffff80fbbfbe80 : 0xffffff800ae20aed
0xffffff80fbbfbeb0 : 0xffffff800ae10448
0xffffff80fbbfbf00 : 0xffffff800ae1961b
0xffffff80fbbfbf70 : 0xffffff800aea5b16
0xffffff80fbbfbfb0 : 0xffffff800aeced53


BSD process name corresponding to current thread: diskarbitrationd


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: 0x000000000ac00000
Kernel text base: 0xffffff800ae00000
System model name: Macmini5,1 (Mac-8ED6AF5B48C039E1)


System uptime in nanoseconds: 61392762904
last loaded kext at 1832628881: com.apple.iokit.SCSITaskUserClient 3.5.1 (addr 0xffffff7f8b965000, size 45056)
loaded kexts:
com.Logitech.Control Center.HID Driver 3.4.0
com.rogueamoeba.InstantOn 6.0.1
com.apple.iokit.SCSITaskUserClient 3.5.1
com.apple.driver.AppleIRController 320.15
com.apple.driver.AppleFileSystemDriver 3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 34
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.AppleFWOHCI 4.9.6
com.apple.driver.AppleUSBUHCI 5.2.5
com.apple.iokit.AppleBCM5701Ethernet 3.2.5b3
com.apple.driver.AppleSDXC 1.2.2
com.apple.driver.AppleAHCIPort 2.4.1
com.apple.driver.AppleUSBEHCI 5.4.0
com.apple.driver.AppleEFINVRAM 1.6.1
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.iokit.IOSCSIBlockCommandsDevice 3.5.1
com.apple.iokit.IOUSBMassStorageClass 3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.5.1
com.apple.driver.AppleThunderboltDPOutAdapter 1.8.5
com.apple.driver.AppleThunderboltDPInAdapter 1.8.5
com.apple.driver.AppleThunderboltDPAdapterFamily 1.8.5
com.apple.driver.AppleThunderboltPCIDownAdapter 1.2.5
com.apple.iokit.IOUSBHIDDriver 5.2.5
com.apple.driver.AppleUSBComposite 5.2.5
com.apple.driver.AppleThunderboltNHI 1.6.0
com.apple.iokit.IOThunderboltFamily 2.1.1
com.apple.iokit.IOUSBUserClient 5.2.5
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.iokit.IOUSBFamily 5.4.0
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.iokit.IOStorageFamily 1.8
com.apple.driver.AppleKeyStore 28.21
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: Macmini5,1, BootROM MM51.0077.B10, 2 processors, Intel Core i5, 2.3 GHz, 8 GB, SMC 1.76f0
Graphics: Intel HD Graphics 3000, Intel HD Graphics 3000, Built-In, 512 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1333 MHz, 0x0198, 0x393955353432382D3034332E413030472020
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1333 MHz, 0x0198, 0x393955353432382D3034332E413030472020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xE4), 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
Serial ATA Device: Hitachi HTS545050B9A302, 500.11 GB
USB Device: hub_device, 0x0424 (SMSC), 0x2513, 0xfd100000 / 2
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd110000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2513, 0xfa100000 / 2
USB Device: Audioengine W3, 0x08bb (Texas Instruments Japan), 0x2704, 0xfa130000 / 5
USB Device: NuForce µDAC 2, 0x1852, 0xdb96, 0xfa120000 / 4
USB Device: BRCM20702 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 3
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8281, 0xfa113000 / 7
FireWire Device: unknown_device, unknown_speed

 

[blueroom]

Did you change anything recently? Like add new RAM?

 

[emerald`]

I moved my USB order around but other than that no nothing new in the last several months. Could it be from an overloaded USB hub? I plugged my webcam into it recently and figured that may be the culprit.

 

[chown33]

Unplug the webcam. See if the problem goes away.

Is your USB hub a powered hub (with a separate power supply) or not? I have both kinds.

Exactly what devices are plugged into your USB hub?


The crashing program was diskarbitrationd. Here's its man page:
https://developer.apple.com/library...ference/ManPages/man8/diskarbitrationd.8.html

Since it's responsible for arbitrating disks, if the USB bus has sudden power loss or recovery, or disks go on and off rapidly, it could become very confused and crash.