Exactly the same problem appears in frozen-bubble and mplayer if using -vo x11. So it's probably a bug of xorg-x11 and it also makes it critical
-- Flash video freezes (not a FF or plugin crash, looks like overlay) https://bugs.launchpad.net/bugs/282020 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs