Symptoms: When I tried to partition it, I got this: Disk Utility seems to think that it's 3.6 TB when I know it's only 500 GB. BUT: The above only occurred when using Disk Utility running off of a Tiger Install DVD. When I used a Snow Leopard Install DVD, everything was fine. Disk Utility got the size of the drive correct, formatted it, and I'm now running Snow Leopard without issue. Forum member Intell thinks the controller board is bad and I should return it. Do you agree?