when I go back on the computer in the morning, the computer seems to choke on everything - anything I do gets me a beachball (click OK on the "you have been disconnected from AIM" dialog? Beachball. Trying to open a window in an app? Beachball. Trying to open a menu? Beachball). After a few minutes, the computer just freezes and so caant do anything about it. I had to hard reboot and the same thing happens after the start up. This happened a few times, but today was the worst - the computer just froze. I can move the mouse, but that's it. The GUI is totally unresponsive. I had to hard reboot to get out. Any help?