Today my my Macbook had a total system freeze. It froze once at the wallpaper only stage when I tried to shut it down, and force quitting did not succeed. I finally did get it to restart after putting it to sleep, waiting several minutes, and then force quitting again. Then, when I tried to shut down once more it froze at the blank blue screen stage and stayed that way...and stayed...force quitting didn't work. So I tried inserting the OSX install disc 1 and booting from that. It ate the disc, wouldn't boot, and wouldn't eject the disc either. Got disgusted, closed the lid to put it to sleep so I could go off and moan. THE MACBOOK WOULD NOT EVEN SLEEP! Waited for it to do something, but nothing doing. So I finally unplugged it, popped out the battery, waited a few minutes, put the battery back in, and rebooted, which worked. Now I'm in the midst of an OSX re-install in the hopes that it will fix whatever was screwed up. I am not at all pleased.