I had this problem too with Ubuntu 9.04 x64 and Firefox 3.5, downloaded from mozilla.com, but not with Firefox 3.0.x shipped with Jaunty.
Previously mentioned solutions haven't worked for me but I solved the problem by replacing $HOME/.mozilla/plugins/libflashplayer.so with a symbolic link to /usr/lib/flashplugin-installer/libflashplayer.so. cd $HOME/.mozilla/plugins mv libflashplayer.so libflashplayer.so.bak ln -s /usr/lib/flashplugin-installer/libflashplayer.so -- Firefox has ALSA/Pulse Audio issues when playing flash video https://bugs.launchpad.net/bugs/356687 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