Application that crashed: kded4
Version of the application: $Id: kded.cpp 1031638 2009-10-05 16:59:11Z lunakl $
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.9-174.fc12.i686 i686

What I was doing when the application crashed:
I recieve a debug error message

 -- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
[KCrash Handler]
#6  0x0549b908 in QMutex::lock() () from /usr/lib/libQtCore.so.4
#7  0x055919d5 in QCoreApplication::postEvent(QObject*, QEvent*, int) () from /usr/lib/libQtCore.so.4
#8  0x05591cdd in QCoreApplication::postEvent(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#9  0x055a1405 in QObject::deleteLater() () from /usr/lib/libQtCore.so.4
#10 0x06dac66f in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#11 0x06dadc63 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#12 0x055a7c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#13 0x055a8843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x003aa350 in QDBusConnectionInterface::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#15 0x003aa6ab in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#16 0x055a7c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x055a8843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#18 0x003aa1f0 in QDBusConnectionInterface::NameOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#19 0x003aa73b in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#20 0x00373a3c in ?? () from /usr/lib/libQtDBus.so.4
#21 0x0037b9a8 in ?? () from /usr/lib/libQtDBus.so.4
#22 0x055a1f96 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#23 0x05a23b24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x05a2b281 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x067a407b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#26 0x05591d73 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#27 0x05592972 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#28 0x05592b2e in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#29 0x055bcf40 in ?? () from /usr/lib/libQtCore.so.4
#30 0x00147128 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#31 0x0014aa58 in ?? () from /lib/libglib-2.0.so.0
#32 0x0014ab84 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#33 0x055bcb6d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x05ac3356 in ?? () from /usr/lib/libQtGui.so.4
#35 0x055902aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x0559070a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x05592bf7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#38 0x05a239a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#39 0x00440815 in kdemain () from /usr/lib/libkdeinit4_kded4.so
#40 0x0804868c in _start ()

Reported using DrKonqi