I am using a MacBook Pro. with lion 10.7.3 and 2gig of ram. My Problem is when attempting play any videos off youtube. The videos are very slow and choppy with no sound. I have the lastest firefox and flash installed. I also uninstalled flash and reinstalled that did not help. I tried Safari it is giving me the same problem. Very slow and choppy. And they both will hang like the video is buffering. I am using the wireless. Any ideas would be very helpful and appreciated.

Thanks