I also ran WhoCrashed, and got 9 crashes with the same info, the last of which is this:
On Sun 2/15/2009 3:55:44 AM your computer crashed
This was likely caused by the following module: ntkrnlpa.exe
Bugcheck code: 0x9F (0x3, 0x8690B028, 0x869159A8, 0x888412A0)
file path: C:\Windows\system32\ntkrnlpa.exe
product: Microsoft® Windows® Operating System
company: Microsoft Corporation
description: NT Kernel & System
The crash took place in a standard Microsoft module. Likely the culprit is another driver on your system which cannot be identified.
Does anyone know what I can do?