It's not a trouble with Firefox but the nvidia-graphics-drivers several persons meet the similar trouble, see Bug #763808, Bug #771788
** Package changed: firefox (Ubuntu) => nvidia-graphics-drivers (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/773951 Title: Vidéo on each site in full screen mode Ubuntu 11.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
