Help! Anyone ever seen this? http://www.youtube.com/watch?v=LCKhMRV1MZ4 Genius Bar was friendly, but only suggested reinstalling Snow Leopard. I can't find my disk, so I might have to go back there to reinstall (or would moving to 1.6.8 be just as good?). Also, now and then, starting imovie or screenflow, I get "you don't have quartz composer" (which I do). Rebooting solves that, but that's not really a solution.