I've had a hard drive die every autumn / early winter since 2004. Almost like clockwork. But it's always been obvious the way they fail ... as in the click of death, or suddenly files show up as something else (I had an external fail last year and it manifested as I opened a file that read "Judge Judy" and a scene from "The Mummy" came up). However, I'm at a loss this time and would like to know if anyone's encountered this issue: I go to turn on or restart my desktop (Mac Pro, that's why I put it in this forum), and I just get a grey screen. Stays like that for many, many minutes. Turn off and back on and it worked the first time (a few days ago), but had to repeat that again a few minutes ago. Is this an early sign of a main disk death? Or is there something more worrisome going on? And yes, I just verified that Time Machine is backing everything up except my caches, FCE docs, and Parallels image, the latter which I do separately weekly and am doing right now.