Comment 11 for bug 615902

I see more or less the same output, so there's probably no need to file a new bug about the differences.
aptitude reports libqt4-assistant and libqt4-phonon as broken

The following packages have unmet dependencies:
  libqt4-phonon: Depends: libphonon4 (= 4:4.6.3-0ubuntu1) but 4:4.7.0really4.4.2-0ubuntu1~lucid1~ppa1 is to be installed.
  libqt4-assistant: Depends: libqt4-network (= 4:4.6.3-0ubuntu1) but 4:4.7.0~beta2-0ubuntu3~lucid1~ppa4 is to be installed.
                    Depends: libqtcore4 (= 4:4.6.3-0ubuntu1) but 4:4.7.0~beta2-0ubuntu3~lucid1~ppa4 is to be installed.