hi everyone, when it comes to defrag, i always recommend diskeeper. my computer consulting firm has about 600 clients. often we get called regarding "healthy" PCs that seems to run slow. after extensive research, we went with diskeeper. besides all the other great feature, the makers of diskeeper actually created the defrag that comes with microsoft windows! so, the way i see it, they would know the best about how the windows operating system works and how best to defrag the files it contains!