Thank you for your response. Although I'm running XP not Vista, I understood the idea to be the same. I'm pretty good about not having programs needlessly running and have the minimum allowed to boot from start up. What surprised me is when I run SB on my girlfriend's machine, which is running Vista, and SB shows only a few temp files it can't delete, and I have her's set up pretty much the same as mine with SB, Ad Aware, Avast and Windows Fire Wall.