I'm newbie here, my powerbook G4 12" 1.33 GHz is in excellent condition (cosmetically) but won't play youtube video's smoothly. It appears the video's are choppy and delayed. Adobe's web site-via youtube suggests i need to update or use current Adobe's version and, or, add plugins. Yes,I have tried to update but... only get old versions of Adobe that are no loner available, I feel like I'm going around in circles. Any suggestions?