I'm just not having luck with my last 3 macbook pros. My new 2.8ghz 15" now takes over 7 minutes to boot to the login screen. Before this happened, I recently copied 139 GB in sound libraries to my system drive. Before I went to work, I quickly closed the laptop and put in my bag. When I took it out of my bag several hours later, the unit was off and battery practically at full charge. When I started it shortly afterwards, it took forever to boot. It would sit there at the grey screen with the spinning circle, then get to the blue background (just before you get to the login screen) and wait there for a while. Most of the time I think you can hear the hard drive churning. Once you log on, everything seems to be normal. I'm curious if perhaps that 139GB copy did something to the OS to slow it down. FYI it has 274/ 500 GB of free space left. Perhaps the hard drive didn't have a chance to park when I quickly put the laptop in my bag and I damaged it? To complicate matters, I have the MCE optibay installed with a 320 GB hard drive loaded in it. The only thing I can think of is to back up, and reload the OS. This should tell me if it's software or hardware related.