I have an older Macbook Pro 2.33 ghz and lately when I've been watching videos on Youtube, Megavideo, etc. the video will become 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've noticed that this happens when the computer gets really HOT. I usually have to shut the computer so that it goes to sleep and cools down for a little while. When I reopen the computer the video usually plays fine for a while. Anyone else experience this problem or know of a solution?