i do i defrag every two weeks, because i'm always downloading ---- then trashing stuff that i dont need anymore. Diskeeper really does the job P.S: Those of you who haven't done a defrag every or saying you don't have that much time, thats just a bull---- excuse. If you don't have all the time in the world, do what xelink had set-up. Which it defrags when its on idle, now tell me that doesn't take more than 10min to set up.
Your supposed to at least defrag once a month as ive heard but i do it about 3 times a year cus i only do it when i feel my computer is lagging and not at the correct speed.
You say that but ive never defargged and formatted 2 years, My pc runs fine and its not really a top spec computer, Ive had vista on my other hard drive for a month, Not defragged that and it runs fine. Arbiter
I do it once a week, because I have my systems on 24/7/365. I use Diskeeper or Perfect Disk. They both work great.