I have a 15" PB 1.5GHz that I got this summer. It's worked spectacularly for me but the last day or two it's frozen up on me a few times. I can still move the mouse but I clicking doesn't do anything and nothing on the keyboard works. It happened twice with dashboard open, but has happened without it open too. Also, I don't know if it's related, but a couple times upon restart the computer is muted and I don't know why. I repaired permissions earlier today and then did it again and it kept fixing stuff and I think it was the same stuff. I must have repaired permissions about 5 times. It's frozen since then though. I guess I don't know how someone would have a solution for me. But maybe there are common causes for freezes like this. Any help or suggestions would be much obliged.