Hi, I have had my Powerbook G4 running 10.4 for three years and have had few problems but now all of a sudden I cannot stream video. The playback is very choppy and a lot of frames are getting dropped. Youtube will work sometimes but Vimeo, Hulu, NBC.com are all too choppy to watch. I know these video streams all work on my friends old PC and that I have streamed all of them on my computer before so I dont understand what the problem is. Also, I have been noticing that occasionally (not frequently) my computer will freeze up for a minute and the colored wheel will spin. This is unusual but I thought nothing of it until I noticed this video problem. Any thoughts or suggestions? Thanks a million.