I don't know if you remember but I made a couple of different threads about my webcam and file transfers making my MSN crash. The webcam issue was a bug in MSN itself - Microsoft had it up on their website for a bit. In terms of fixing the problem, I tried uninstalling and then reinstalling MSN only to find that it did absolutely nothing. About a week or so after having frequent crashes, everything went back to normal and I hadn't installed anything extra either