Unfortunately, BC's suggestion might be your best bet. I can't really find much of anything malicious anymore, which suggests that it is not a virus issue. There may be something you can do, but with all of the things on my plate right now, I'm not quite sure where to begin with the troubleshooting process. If you have the CD, you can try a reformat or fresh install of Windows. Or you can see if anyone over at the Windows or Software sections of the forum might have any better suggestions.