Thanks for your assistance

I am really appreciative of the depth and breadth of your analysis.

The results of MBRCheck.exe are at http://www.mediafire.com/?ibefci3ajzsz2ba
I did get an 'N’as I do have a non-Windows partition.

I am running a dual boot system with Mepis 11. I have had this setup for the past six months and long before getting the BSOD.

I am not getting crashes as I do not currently have Avast installed. As I explained previously, when Avast was installed I was able to boot into a desktop and then ~ 5 minutes later I would get the above referenced BSOD.

I have been only activating the wireless connection to check here and, as you may have seen, have AdBlock Plus and NoScript running. I also have not been using my mail client while I am exposed.