Well, I've subscribed to MaAfee....after about 20 minutes of scanning through every file on my PC, it comes up clean. However, when I do disk defragment, there is a HUGE section of red (fragmented files) that didn't used to be there. I'm tempted to reformat but don't have much confidence in my ability to re-install everything (Limewire & all the XP updates). I have/had backup on Zip disks but when I went to backup today, there was obviously the corrupted stuff there and it was going to take MANY disks instead of the two ZIP 250's required previously. Now, my backup disks are in disaray because of this latest attempt. Any ideas on something I can buy, download, that might fix the problem w/out reformating? This is a little much for an obsessive, anal-retentive type as myself!