Hey, Well i bought my laptop about 6 months ago now, it came with XP Home and everything working fine, then in December i upgraded to Windows Vista Ultimate from MSDN discs. A couple of days ago i got rather fed up with vista (none of my hardware worked with it), that i formatted it and installed Windows XP MCE. Windows XP MCE was constantly generating Dr Watson Postmortem Debugger pop-ups about programs failing and being closed. I re-formmated my pc again and installed XP Pro, I'm now recieving pop-ups simular to these, often for different programs. I have noticed that other people with these problems have Kaspersky Anti-Virus so my conclusion is that it is that as i can't remember any problems before installing it! Thanks! From dbferrari