I figured out that it's because you're using pulseaudio in daemon mode. If you edit the config file and disable daemon temporarily it'll upgrade for you.
-- pulseaudio error1 upgrading pulseaudio_0.9.13-2ubuntu6_i386.deb https://bugs.launchpad.net/bugs/317921 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