Pleas show me the output of "dpkg -l | grep python2.5-qt4-common" it should be "ii python2.5-qt4-common 4.7.5-maemo1 Shared files for PyQt4" if it does not show it as version 4.7.5, you can try to reinstall it: "apt-get install --reinstall python2.5-qt4-common"