I've got a 15" 1.5GHz G4 PowerBook (previous generation, bought in August 2005) with 1Gb RAM and a Combo drive, running OSX 10.4.2 (not 10.4.3) When I play DVD movies through Apple's DVD player, and then eject the disc (by clicking the eject button in the DVD player window), everything is normal, until I unplug the power adapter (while the computer is running, but without the DVD in the drive). Then, everything freezes - the pointer locks up, the keyboard locks up, everything. The only way to get out of this is to hold the power button down. What could be causing this? Is it because I'm ejecting the disc while it's essentially still playing (I keep on forgetting to press the "Stop" button)? It's also only started doing this since I installed drivers for my new Epson Stylus D88 printer - could this be a problem? I've repaired permissions, and that seems to have done nothing. Any ideas? Thanks for the help Edit: Note: Apple DVD Player is not running when I unplug the power adapter, nor is the DVD in the drive.