I've noticed recently that about 5 minutes after I stop using my computer and the screen saver kicks in that my CPU starts running and keeps running. If I move the mouse to stop the screen saver, the CPU stops. It isn't the screen saver (I'm just using the basic Win XP Starfield) because it doesn't start when the screen saver does. I don't have anything scheduled to run and it happens at all times of the day. If I disconnect my modem, it seems to stutter a bit and eventually stop. If I do nothing, it runs and runs for ages. I think it's a virus but I've run several A/V programs and they have found nothing. There are no other signs of a virus - no slowdowns, no glitches. I run a full A/V scan every week and keep a pretty clean system but obviously something is going on here. What I'm wondering is if anyone can recommend a freeware tracking software that will let me know every program that runs on my CPU. I don't care about keystroke tracking, just about whatever this is that's running when the system is supposed to be idle. I figured if I could track what's running, I could get rid of it. Any ideas would be greatly appreciated! Thanks.