How often u guys defrag ur HD with using BT as daily?

I dont even bother defragging my harddrive. I just reinstall windows every two months or so. Its not an inconvience for me cause is use a program called nLite that allows me to create a custom Windows XP installer cd. So i just pop it in and it install everything including patches, settings and programs without user intervention.

Why do I do this? I just like working with a clean and new OS. Lol, this of course isnt for everyone.

That said, its about time i reformat. Ive been putting it off for like 2 weeks.

Normaly delete movies, games, ect. if i dont like them.
If i do like them i burn the files to dvd-disks and name them so i always can find what i'm looking for.

Defreg when i think my computer is slowing down or not working as i want it to :D

i know i should but i never do.
got 600+ gig so would have to do it whislt im sleeping and i just never do :)

like, never

get diskeeper pro and never have to worry about defragmented files...i love that program.