Works foookin brill for me! But i'm overclocked so i don't know if that helps? Only things i can't do is rate video's and search related video's which i'm sure will be with us soon! Anyone struggling on 3G i suggest you do a spedtest....

http://www.mybroadbandspeed.co.uk/

I should think you need at least a gig maybe more for this kind of quality. Maybe change your video playback quality to "mobile" and see if that works