Comment 7 for bug 193609

Yep thats what I'm getting, atm (see original bug). Everything was working a couple or more days ago, but some patch brought an end to that. I'd say you just need to wait until the appropriate patch is released -- like me.

Its worth the wait though because browsing youtube in totem is a pretty nice experience. Best of all fullscreen is smoooooth unlike what i get using the proprietary browser plug-in.