My Windows system was up for well over a month until I upgraded Norton's and had to restart last week. So far it has been very stable.

The reason I did a Norton's update was that CCPROXY.EXE was slowly taking over resources to the point where 70-75% of my processor capacity was being used by it. It may have had something to do with monitoring the Majestic-12 URL's being crawled. I didn't really know what was causing the resource problems, but since the update of Norton's the issue has not come back.