The OP error suggests that the file system got corrupted or something messed with the includes (other than the phonon packages). So not much that we could or ever can do about this. Though I seem to recall dpkg/apt handling this more robustly now.
** Changed in: phonon (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/630865 Title: unable to install new version of `/usr/include/phonon/Phonon/AbstractAudioOutput' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/phonon/+bug/630865/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs