After a couple of hours, the CPU Usage gets stuck on 100% and then brings everything to a crawl. This has be going on for about a month, and it's now getting on my every last nerve. All I'm usually doing is checking e-mail, browsing the web and that's about it. The CPU and mobo temps check out fine, the system has 1024 MB of RAM and the PF Usage is always great. Any ideas outside of a fresh install (I've been putting that off for over 4 years )