I stream watchespn.com (used to be espn3.com, and espn360.com before that) all the time on my Macbook Pro. The quality is pretty good and I never have any problems with it during a sporting event. However, whenever it goes to commercial it gets really jittery and I only get about 1fps. Has anyone else experienced this? Any idea what's going on? EDIT: More info: Windows computers don't seem to have this problem.