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
Distribution: "Fedora release 12 (Constantine)"

What I was doing when the application crashed:
kde got crashed, only mozilla firefox was open

 -- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78637a0 (LWP 1709))]

Thread 2 (Thread 0xb2148b70 (LWP 1900)):
#0  0x00455dc6 in clock_gettime () from /lib/librt.so.1
#1  0x05c8e73b in ?? () from /usr/lib/libQtCore.so.4
#2  0x05c8e932 in ?? () from /usr/lib/libQtCore.so.4
#3  0x05c8eadb in ?? () from /usr/lib/libQtCore.so.4
#4  0x05c8cd50 in ?? () from /usr/lib/libQtCore.so.4
#5  0x004d22c0 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#6  0x004d2679 in ?? () from /lib/libglib-2.0.so.0
#7  0x004d2b84 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#8  0x05c8cba7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#9  0x05c602aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#10 0x05c6070a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#11 0x05b6da54 in QThread::exec() () from /usr/lib/libQtCore.so.4
#12 0x05c42a3c in ?? () from /usr/lib/libQtCore.so.4
#13 0x05b70de3 in ?? () from /usr/lib/libQtCore.so.4
#14 0x003faab5 in start_thread () from /lib/libpthread.so.0
#15 0x00351dce in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb78637a0 (LWP 1709)):
[KCrash Handler]
#6  0x05c77a83 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#7  0x05c78843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#8  0x018b890a in PackageKit::Transaction::finished(PackageKit::Transaction::ExitStatus, unsigned int) () from /usr/lib/libpackagekit-qt.so.12
#9  0x018b3b17 in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libpackagekit-qt.so.12
#10 0x018b5113 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libpackagekit-qt.so.12
#11 0x05c77c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#12 0x05c78843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#13 0x00157350 in QDBusConnectionInterface::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#14 0x001576ab in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#15 0x05c77c0c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x05c78843 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x001571f0 in QDBusConnectionInterface::NameOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib/libQtDBus.so.4
#18 0x0015773b in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#19 0x00120a3c in ?? () from /usr/lib/libQtDBus.so.4
#20 0x001289a8 in ?? () from /usr/lib/libQtDBus.so.4
#21 0x05c71f96 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x06385b24 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x0638d281 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x06e1507b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x05c61d73 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#26 0x05c62972 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#27 0x05c62b2e in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#28 0x05c8cf40 in ?? () from /usr/lib/libQtCore.so.4
#29 0x004cf128 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x004d2a58 in ?? () from /lib/libglib-2.0.so.0
#31 0x004d2b84 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x05c8cb6d in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#33 0x06425356 in ?? () from /usr/lib/libQtGui.so.4
#34 0x05c602aa in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x05c6070a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x05c62bf7 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#37 0x063859a8 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#38 0x00223815 in kdemain () from /usr/lib/libkdeinit4_kded4.so
#39 0x0804868c in _start ()

Reported using DrKonqi