I've had my system completely freeze up on me twice in the last week or so, the first time it's ever happened. I'm on an ancient 12" PB, 1.33 GHz G4, running 10.4.10. I didn't do anything to cause it that I know of, the last one it was frozen after just sitting there overnight so I really don't know what could have happened there. I ran Disk Warrior on it and the disk checked out fine. I'm now back up running. Without knowing anything else about my system, do you think this is necessarily an impending sign of doom? Any suggestions on what to do (I've backed up my data of course)? Should I reinstall?