I have 4 drives in my Mac Pro...in bay 2, I have a Western Digital 750 gb drive I got just about 3 years ago. The drive has been slightly problematic lately...like I'll be browsing through Finder and I'll get an error when going into certain folders...my iTunes library is on the drive and lately songs have been skipping etc. I looked in disk utility just now and it says "the drive has a hardware problem that cannot be repaired" and says S.M.A.R.T. status failed. I don't mind replacing the drive, EXCEPT... I previously had a raptor in this same bay and the raptor failed a few months ago after a couple years in service. I tried moving the raptor to another bay, also tried it in an enclosure- nothing- the raptor died. Is it possible this particular bay is causing problems, or no, there is no way a particular bay can be causing hard drives to fail? Like the bay can't be sending too much voltage or whatever (I have no idea)? Is it just pure coincidence that two drives in the same bay failed (first the raptor, then this one I moved into bay 2)?