I have same slow youtube video streaming issue on my new Samasung UN46ES6150F TV which I bought just yesterday. Youtube videos buffer very slow and the sound and video is not in sync. Have you guys found any solution to fix the speed issue on the TV? Please let me know. And yes, when I first open up the app, the home page looks exactly like this-(http://www.youtube.com/leanback).

Thanks,
nsamsung