Reinstaller the flash plugin, and restarting firefox solved this issue for me. I'm using Ubuntu 9.04 64 bit and upgraded from Ubuntu 8.10 64 bit too.
$ sudo apt-get remove --purge flashplugin-installer flashplugin-nonfree $ sudo apt-get install flashplugin-installer flashplugin-nonfree -- 9.04 flash player no sound after upgrade https://bugs.launchpad.net/bugs/367173 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
