A strange thing happened with my mac mini just now, the screen went blank and music stopped playing. However the fans were still running, and had been running quite high before this. On (manual) restart, it could not find a keyboard and mouse until i plugged the keyboard and mouse into a different usb slot. Spotlight was indexing the computer when it was turned on too. Any idea what this might mean? I put 2GB of ram in myself, since the first day i've had it and no problems; its about 3 weeks old. This is the first time this has happened, just wondering if i should take any action regarding this?