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 2.6.31.12-174.2.3.fc12.i686 i686

What I was doing when the application crashed:
I have Firefox, Kopete, Skype, Amarok, Ktorent,HP service and terminal open with minimal load.  Konqueror opened and I received a crash message.

 -- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
[KCrash Handler]
#6  0x04b6390a in QMutex::lock (this=0x52009f) at thread/qmutex.cpp:152
#7  0x04c599d5 in QCoreApplication::postEvent (receiver=<value optimized out>, event=<value optimized out>, priority=<value optimized out>) at kernel/qcoreapplication.cpp:1020
#8  0x04c59cdd in QCoreApplication::postEvent (receiver=<value optimized out>, event=<value optimized out>) at kernel/qcoreapplication.cpp:973
#9  0x04c69405 in QObject::deleteLater (this=<value optimized out>) at kernel/qobject.cpp:2018
#10 0x03c7eb1f in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#11 0x03c80113 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#12 0x04c6fc0c in QMetaObject::activate (sender=<value optimized out>, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=<value optimized out>)
    at kernel/qobject.cpp:3112
#13 0x04c70843 in QMetaObject::activate (sender=<value optimized out>, m=<value optimized out>, local_signal_index=<value optimized out>, argv=<value optimized out>) at kernel/qobject.cpp:3186
#14 0x00482350 in QDBusConnectionInterface::serviceOwnerChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>, _t3=<value optimized out>)
    at .moc/release-shared/moc_qdbusconnectioninterface.cpp:204
#15 0x004826ab in QDBusConnectionInterface::qt_metacall (this=<value optimized out>, _c=<value optimized out>, _id=2, _a=<value optimized out>)
    at .moc/release-shared/moc_qdbusconnectioninterface.cpp:131
#16 0x04c6fc0c in QMetaObject::activate (sender=<value optimized out>, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=<value optimized out>)
    at kernel/qobject.cpp:3112
#17 0x04c70843 in QMetaObject::activate (sender=<value optimized out>, m=<value optimized out>, local_signal_index=<value optimized out>, argv=<value optimized out>) at kernel/qobject.cpp:3186
#18 0x004821f0 in QDBusConnectionInterface::NameOwnerChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>, _t3=<value optimized out>)
    at .moc/release-shared/moc_qdbusconnectioninterface.cpp:232
#19 0x0048273b in QDBusConnectionInterface::qt_metacall (this=<value optimized out>, _c=<value optimized out>, _id=6, _a=<value optimized out>)
    at .moc/release-shared/moc_qdbusconnectioninterface.cpp:135
#20 0x0044ba3c in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=<value optimized out>, 
    slotIdx=<value optimized out>) at qdbusintegrator.cpp:891
#21 0x004539a8 in QDBusCallDeliveryEvent::placeMetaCall(QObject*) () from /usr/lib/libQtDBus.so.4
#22 0x04c69f96 in QObject::event (this=<value optimized out>, e=<value optimized out>) at kernel/qobject.cpp:1110
#23 0x02127b24 in QApplicationPrivate::notify_helper (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:4065
#24 0x0212f281 in QApplication::notify (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:3605
#25 0x02bb707b in KApplication::notify (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at /usr/src/debug/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#26 0x04c59d73 in QCoreApplication::notifyInternal (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at kernel/qcoreapplication.cpp:610
#27 0x04c5a972 in sendEvent (receiver=<value optimized out>, event_type=<value optimized out>, data=<value optimized out>) at kernel/qcoreapplication.h:213
#28 QCoreApplicationPrivate::sendPostedEvents (receiver=<value optimized out>, event_type=<value optimized out>, data=<value optimized out>) at kernel/qcoreapplication.cpp:1247
#29 0x04c5ab2e in QCoreApplication::sendPostedEvents (receiver=<value optimized out>, event_type=<value optimized out>) at kernel/qcoreapplication.cpp:1140
#30 0x04c84f40 in sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:218
#31 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#32 0x008f0128 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#33 0x008f3a58 in ?? () from /lib/libglib-2.0.so.0
#34 0x008f3b84 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#35 0x04c84b6d in QEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#36 0x021c7356 in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#37 0x04c582aa in QEventLoop::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventloop.cpp:149
#38 0x04c5870a in QEventLoop::exec (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventloop.cpp:201
#39 0x04c5abf7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#40 0x021279a8 in QApplication::exec () at kernel/qapplication.cpp:3525
#41 0x00520815 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdelibs-4.3.4/kded/kded.cpp:936
#42 0x0804868c in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdelibs-4.3.4/i686-redhat-linux-gnu/kded/kded4_dummy.cpp:3

Reported using DrKonqi