I am running WIn XP on a backup PC. It is very slow, even though only an 18 month old system. I did a scrapedown 4 months ago, but it is slow again. I run zonealarm, AIM, spywareblaster and AVG on system always. Yes, I constantly use CCLeaner to empty temp internet files, and everything else imaginable. And I defragged weekly. Is there ANYTHING else that might cause or alleviate a CONSTANTLY slow system on a relatively new computer with lots of RAM?