I'm finding videos on the site are being very temperamental in Firefox 10.0 on Mac OS X 10.7.2.
Often when I press the HD or SD button the video will start buffering, but nothing will actually play - not even the ad.
Even more often the ad will actually play, but when it ends it just shows an error and goes back to the HD/SD selection screen without playing the video. Then when I make my HD/SD choice again it proceeds to play the video again! The video will usually play after this 2nd ad, but I'm sure you can understand how annoying it is to have to sit through the ads twice!
So if there's a video on the site I want to watch, I generally end up just searching for it on YouTube instead these days, as it's usually much less hassle that way.
It'd be great if this could be fixed!