All of a sudden, my computer is acting strange. There is an intermittent delay when entering text or clicking on something. The only thing I have downloaded is an Earthlink update. I am going to remove and reinstall Earthlink tonight to see if that is the problem. I'm running XP SP1. I've run my spyware programs and virus checkers and found nothing. When I do Ctl-Alt-Del and click on resources, I see that every few seconds the CPU usage spikes to 100% so I assume something is running in the background that is interfering. Can someone give me some suggestions as to how to find and fix this problem. Thanks in advance.