Hi. I am running iTunes 10 on a Macbook 1,1. Whenever I play any video, doesn't matter if it's HD or not, the video is skipping frames and sometimes freezes. Then after about five seconds or so, video playback is normal. I know this is an iTunes issue since I can play the same videos on Quicktime just fine. I don't know if this was a problem before I updated iTunes, since I just received this laptop. Anybody know what the problem is? Thanks.