My macbook is suddenly not responding properly. I have been using it all day and then I tried to get photos off my card into iPhoto. I upgraded my iLife two days ago but haven't had time to use them up until now. But when I tried to import my photos I had to upgrade all my iLife apps. I then upgraded and everything was fine and I imported the photos. Then everything stopped working my safari quit unexpectedly and iPhoto froze. I had to restart my computer then safari just kept bouncing. I restarted a few more times and no luck, iTunes also started not responding also. I turned my computer off and on, and no luck, iTunes is unresponsive as is Safari. But all the other apps I've checked are working including iPhoto and the MacApp Store. I'm completely baffled, does any does anyone have any advice/opinions? 