On this MBP, iMovie '06 is giving me trouble. It gives me a beach ball very often, and it never goes away. When I force quit it, it remains in the dock as if it weren't quit. One time, it froze up the entire computer (never happened to me on a mac before!). Any ideas? edit: i just repaired permissions, and it seems to be working sortof-okay now... but i'm wary that it's gonna happen again.