I tried this over on Operating Systems, but got no reply. I noticed this a couple of weeks ago. I run SETI 24/7 and my numbers started to slide. Normally I was getting about 4.5 WU per day, then my stats went to 3-3.5. When I opened Task Manager the 'System Process' was using 30% of the CPU power. That doesn't seem quite right, as I'm running a T-Bird 1200 oc'd to 1350, 768MB. When I reboot it drops back down to 0% or 1-2%, which it always ran. then slowly it creeps back up to 30% and slows the system down. I usually only have Outlook Express, ZoneAlarm, and SETI running for the time when I'm not doing anything else - which is when the System Process is running at 30%. Any ideas? Thanks.....