I have been trying to buy apps in the Mac App Store on and off since 11:30 a.m. ET without any luck. Every time I click on 'Angry Birds' or any app the program "beachballs" and becomes unresponsive. I have to force quit every time. I've tried waiting it out with no luck, restarting my computer, and relaunching the app. Is anyone else able to actually download apps?