Is anyone able to get youtube to play at higher resolution?

Right now, it all defaults to their html5 viewer which only supports 360p (unless the vid was encoded in 720p). I am trying extensions FLV for both Firefox  and Chrome and they won't play 480p.  It is as if that resolution has vanished.

edited to add: this may be a Firefox problem. I can see 480p on Chrome (but of course Google has disabled any video  downloads on Chrome)
but they've disabled audio on any 480p downloads by separating out the streams.