I can't figure this out. Hopefully you guys will be as you've been quite a help in the past. I upgraded to Firefox 4 and ever since then I can't Maximize videos on playing in MegaVideo or DailyMotion. The video plays fine in normal mode, but if I go to full screen I can hear the audio, but no video. Any ideas on what I can do to resolve this? YouTube plays fine in both normal and full screen mode, so does Netflix. Thank you in advance.