All updates are installed through update-manager (System -> Administration -> Update Manager). Make sure you have all updates installed. If it still does not work then remove mozilla-plugin-vlc and then install it back again (do not choose re-install).
If you are trying to watch clips on youtube, then make sure you have flash installed (flashplugin-nonfree) Report back if you still are having problems. -- mozilla vlc plugin not playing media https://bugs.launchpad.net/bugs/212033 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