A.K.A. I'll have to re-download all the torrents
for starters, that's a drastic solution to a nuisance problem. Hit up Google Groups and see if anyone knows how to fix your problem. Note that if your DVD Burner has a hardware problem then the hard drive reformat won't fix it.
But here's a thought - before you blow away your data, take your hard drive to a friend with a DVD burner (or a bigger hard drive) and either burn the discs or at least back them up. That's what I did (as I have no DVD Burner)