Oh wow.. How close are you to Seattle? I was a computer technician for 6 months at computer sonics. :/ Maybe i can help?? I have seen raid 5 crap out like that too. A customer had a server with 3 750gb wd drives and two failed somehow. The os would not boot but i managed to copy all the data over using dos from the install dvd. I dont know why you chose to use raid with 3 hard drives. I think it would be more beneficial to raid two drives in 0 and have one of the 640's as a backup. And wd is really easy on their rma process. The new wd's black drives have 5 year warranty.