I ran McAfee Virus and Microsoft AntiSpyware again. They both found files and I assume they were part of the problem. I just hope I don't have a "sleeper" file lurking to be activated when I click just the right page!
I also ran all my other things again...Spybot, Adaware, and did a clean up of all temp files, etc. Then, for good measure, I ran the defrag program. Also cleared the paging file. All is well so far.
