BSOD randomly cannot find cause

Code:

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Use !analyze -v to get detailed debugging information.

BugCheck C9, {23e, 8c224dd4, 8eeb0ed8, 0}

Unable to load image ubohci.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for ubohci.sys
*** ERROR: Module load completed but symbols could not be loaded for ubohci.sys
Probably caused by : ubohci.sys ( ubohci+fdd4 )

Followup: MachineOwner
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1: kd> lmvm ubohci
start    end        module name
8c215000 8c235000   ubohci   T (no symbols)           
    Loaded symbol image file: ubohci.sys
    Image path: ubohci.sys
    Image name: ubohci.sys
    Timestamp:        Fri Oct 05 22:56:24 2012 (506EE000)
    CheckSum:         0001FEF9
    ImageSize:        00020000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

The Unibrain OHCI driver is outdated. Update it here:
Downloads | UniBrain

Doesn't matter either way - the driver needs replacing.