About a week or two ago my computer started to severly slow down. I've scanned it for spyware, viruses, defragmented, and ran scandisk. I cannot figure out what is causing this computer to "lag" so much. I open a program, an internet browser, or even windows explorer and it takes damn near a minute to open it up. Now, I recently had Windows Service Pack 2 installed, and I removed it because it was conflicting with some essential software that I have. Could uninstalling this have caused the slow down in my computer's performance? All of my components are pretty up to date, so it's not like that is the reason it's slowed down. I'm running with 512mb of pc3200 corsair ram, an asus mobo, athlon xp 2800, 40 gig HDD, and the other stuff is standard. Any ideas, let me know.