I'm having a few issues with videos at the moment. Flash works fine except that for some reason I have a general issue where most flash videos on any site seem to have the picture freeze for a second or so now and then while the sound continues. Specific to GB though I have major issues with the HTML5 player. Sometimes videos simply don't start. When they do they generally continue to play fine unless I use the seek bar to move forwards/backwards. When I do it jumps to that location plays for about half a second then freezes. I have to refresh the whole page to get any further response from the player.
Edit: I should add this is in firefox
Having the same issues with Firefox. Chrome is working fine though.