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 2.6.31.5-127.fc12.i686 i686

What I was doing when the application crashed:
i didnt know anything went wrong until the crash reporting assistant opened.  The desktop is still totally useable.  The only thing that seems to have changed is the order of stuff in the notification applet

 -- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
[KCrash Handler]
#6  0x072d490a in QMutex::lock() () from /usr/lib/libQtCore.so.4
#7  0x073ca9d5 in QCoreApplication::postEvent(QObject*, QEvent*, int) () from /usr/lib/libQtCore.so.4
#8  0x073cacdd in QCoreApplication::postEvent(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#9  0x073da405 in QObject::deleteLater() () from /usr/lib/libQtCore.so.4
#10 0x08831b1f in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#11 0x08833113 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#12 0x073e0c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#13 0x073e1843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x07526350 in QDBusConnectionInterface::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#15 0x075266ab in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#16 0x073e0c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x073e1843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#18 0x075261f0 in QDBusConnectionInterface::NameOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#19 0x0752673b in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#20 0x074efa3c in ?? () from /usr/lib/libQtDBus.so.4
#21 0x074f79a8 in ?? () from /usr/lib/libQtDBus.so.4
#22 0x073daf96 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#23 0x02127b24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x0212f281 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x07ad107b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#26 0x073cad73 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#27 0x073cb972 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#28 0x073cbb2e in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#29 0x073f5f40 in ?? () from /usr/lib/libQtCore.so.4
#30 0x003da128 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#31 0x003dda58 in ?? () from /lib/libglib-2.0.so.0
#32 0x003ddb84 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#33 0x073f5b6d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x021c7356 in ?? () from /usr/lib/libQtGui.so.4
#35 0x073c92aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x073c970a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x073cbbf7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#38 0x021279a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#39 0x07d0a815 in kdemain () from /usr/lib/libkdeinit4_kded4.so
#40 0x0804868c in _start ()

Reported using DrKonqi