Hi Is there something special I should know about KSimpleConfig? In kthememgr [ kdebase/kcontrol/themes/], the use of deleteGroup() method of KSimpleConfig segfaults without visible reason. The code is like: [ kdebase/kcontrol/themes/theme.cpp#Theme::clear() ] ------------------------------ QStringList gList(groupList()); for (QStringList::Iterator gIt(gList.begin()); gIt != gList.end(); ++gIt) deleteGroup(*gIt); ------------------------------ The segfault is in deleteGroup() All code seems quite clean. The only thing which bothered me was the multiple inheritance of the Theme class. I seem to have heard that there is some problem with Qt's Q_OBJECT and the multiple inheritance. Hmm! Quite tiresome :-( Cristian Tibirna : ctibirna@total.net : www.total.net/~ctibirna PhD Student : ctibirna@gch.ulaval.ca : web.gch.ulaval.ca/~ctibirna KDE contact - Canada : tibirna@kde.org : www.kde.org