Diagnosing BSODs

I had to investigate a series of Bluescreens and tried a lot of the usual stuff, i would do with common sense and my unixy background. In the end the best tool i found was the NirSoft Bluescreen Analyzer. It helped me understand the frequency of my problem and gave me rudimentary stack traces. So it seems my Page Fault in Non Paged Area BSOD was caused by some interaction of my AVG Virus scanner and the ntfs driver. Good riddance piece of crap.