This happened a while ago and after research I found that you tube has a bunch of servers world wide and unless the video you want is on a local server then it bogs down and you have to wait for it to download onto your local server. once you do this then anyone else who watches it from that server gets it in a continuos stream. Im not sure when they changed it to this but yeah, it sux fucking balls. Put it all back on a central server you ass clowns.