Playing video causes PowerBook to sleep
Whenever I play video on my PowerBook G4 (1.33GHz, 12" w/1.25GB RAM, running Mac OS X 10.5.8) the fan will spin up immediately and after a minute or two the system will go into sleep mode.
Waking it up starts the video from the point where it stopped when it went to sleep.
Also, playing videos from the browser (Safari) is very choppy.
Any solution or explanation of the cause for this?