I faced there same problem, as with other qt4 applications: links are not clickable by default, though with proper display style (blue underlined). I found how to do it using qt4 api: http://www.qtcentre.org/threads/17365-Clickable-URL-in-QMessageBox But for kdialog there is no way for that. Service three includes only two qt-related sections: org.qtproject.Qt.QApplication, org.qtproject.Qt.QCoreApplication and org.kde.KApplication. Reproducible: Always
*** This bug has been marked as a duplicate of bug 103313 ***