I'm using a unibody MBP 15" that I had for about 2 years. After being awakened from sleep mode, the hard drive started to "click" for about 3 mins straight (I was on XP at the time, although that's probably irrelevant). I was so convinced that my hard drive was about to die, so I backed up my data. Then I ran a "repair disk" on disk utility to see what's up. There was something about "missing thread record" and "invalid volume file count," but eventually it was repaired... It now says the drive is fine. So my question is, should I still expect the drive to fail on me pretty soon? I know what I heard, and it was pretty bad. It seemed like a hardware problem that can't simply be fixed by running a program. At the same time, I'm a bit puzzled by the SMART status saying the drive was verified. Is it SMART that unreliable?