I'm about 99% sure my hard drive on my Mac pro is failing. For the past view days I've heard a odd clicking sound that will only last for a few seconds, my Mac pro will randomly wake from sleep at times but only part of the way (no display comes on) then go back to sleep. And after my last reboot things are slowwwwwwwww. It takes about 40 minutes to repair permissions. I've never had it take more then 5 min. When I verify. The disk it tells me the volume is corrupt. I tried using another tool to check the drive using smart but it failed to finish the check. Does anyone know of any other software that mig help me confirm this 100% Thanks.