I did upgrade the power from 350 watts to 500 watts, no change. It seems to have started when I changed the heat sink a few weeks ago...factory one wasn't cooling the cpu as I desired. Now it's cooling much better, averaging no more than 109 fahrenheit in a warm house (AC died the other day), 102 when idle with AC working. It is over clocked a little from 100 to 117 on my AMD Athlon XP, which gets me to 1.44 GHz.
My suspicion is some bug has slipped past all my defenses: Windows Firewall, Norton 2005, Spybot S&D, Adaware with Ad Watch, Spywareblaster, SpywareGuard, Ewido 3.5, Trojanhunter with TrojanGuard, & Microsoft AntiSpyware. Everything is updated & run regularly. Ok, I'm legally paranoid...any ideas, suggestions?