Why does my MBP keep freezing? I can be doing anything; watching a movie, surfing the web, browsing folders..... It'll just freeze. Sometimes I'll get the beach ball, sometimes I won't. sometimes i'll even be able to move the mouse, but can't click on anything, sometimes i can click on finder windows but nothing else. It happens every 2-3 minutes and lasts about 2 minutes each time. It doesn't matter if i have a lot of programs open, or none at all. I've never been a believer of the "it's a mac, it doesn't need defragging!" nonsense anyway, but can someone explain this? And I did do the disk permissions, verify and repair, but it would freeze. I think the longest i let it stay there was about 30 minutes before i reset the computer. running the idefrag bootdisk showed either 100% fragmentation or 77%, depending on where i looked.