How long does it take to do a 35-pass Gutmann wipe? 14 Days
on a mid-range Dell Laptop with an 80 GB disk... took all of xmas break!
I should note that I did this for a client that was exceedingly paranoid. (in response to: lifehacker.com/5153684/properly-erase-your-physical-media )
Taken on January 2, 2008