Package: libqt4-core Version: 4.3.3-2 Whenever I am trying to use an application linked to libqt4 it fails with a missing symbol error. Example: $ qtconfig-qt4 qtconfig-qt4: symbol lookup error: /usr/lib/libQtNetwork.so.4: undefined symbol: _ZN14QObjectPrivate15checkWindowRoleEv this works also for the other libqt4 packages libqt4-core libqt4-dev libqt4-gui libqt4-qt3support libqt4-sql Regards