i am planning no getting an iphone in the next few weeks and so ive been at the apple store and at&t store by me alot playing with them and i have noticed that at the at&t store, twice now (at two different at&t stores) that any video i try to look at on youtube looks really pixelated and choppy.. ive never seen this problem at an apple store though.. anyone know what the deal is? is it if you not in a strong wi-fi area or something?