I keep my computer (XP Home) optimized, defragged, and so forth. I ran the CSB program on it today without changing any settings in the program before running. After running it, I noticed that all my quick launch icons were missing from the quick launch area of the tray, as well as a couple of shortcuts on the desktop. I couldn't get them back and never had an optimizer remove them before. So I rebooted to see what shakes out, and got a blue screen. Eventually I ran system restore and only a few issues remained with my email spam filter, most of which were corrected when I ran a registry repair tool called registry first aid. At any rate, I didn't have a good experience with CSB. And for some reason I have to start from scratch retraining my email spam filter.