Ik bought yesterday an iMac G4 17 inch 1.25GHZ 512MB RAM Os X Tiger And if I go to Safari, the browser quits/crashes most of the time. And if I try to watch youtube, the video's are stuttering and it crashes. If i change the settings to 280P, it works, but then is the quality so bad. But I can watch Apple quicktime trailers in 720P! Will it be better if I upgrade my ram and upgrade to Leopard? What is the best thing I can do? Is there a special application that you directly download the youtube video? How can I get the most of this machine? Thanks in advance.