I have an older Macbook Pro 2.33 ghz and lately when I've been watching videos on Youtube, Megavideo, etc. the video will becomes choppy and the sound becomes distorted and gargled. This problem is becoming increasingly annoying (just about everyday) and I don't know what is wrong. I usually have to restart the computer or quit the browser and hope that the video will play. Anyone else experience this problem or know of a solution?