you still have something on your computer. try more spyware scanners. at least you aren't likely to have a virus. when you look in Task Manager, what processes do you see running and what CPU % are they using?
Okay, my computer is a 1.7 GHz with 512 MB of 2100 DDR memory running XP Pro(I'm not sure what other information is relevant). Anyway in addition to Norton's Auto-Protect being enabled, I run Ad-aware and Spybot almost daily (updating definitions each time) and hardly ever find anything. Normally My CPU usage is below 5%, sometimes though it shoots up to 100% at seemingly random times. When this happens my computer just crawls and if for example I try to open a folder, the inside will just be blank and the cursor turns into an hour glass and the folder will never actually open. One must Ctrl+Alt+Delete and end the task-- only to have it happen again so I always have to restart when this happens. Anyone know what's up? Thanks.