I had the same bug after an upgrade from 11.10 to 12.04. Solved by deleting ~/.pulse folder.
(No need to remove pulseaudio) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/858466 Title: Ubuntu 11.10 Audio Problems with Browsers. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/858466/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs