Application that crashed: kpackagekit
Version of the application: 0.5.4
KDE Version: 4.3.5 (KDE 4.3.5)
Qt Version: 4.5.3
Operating System: Linux 2.6.31.12-174.2.22.fc12.x86_64 x86_64

What I was doing when the application crashed:
I installed security upadates and wanted to install the others later, I left the window open. While I was doing other things (Okular) the program crashed while its window was not active.

 -- Backtrace:
Application: KPackageKit (kpackagekit), signal: Segmentation fault
[KCrash Handler]
#5  0x0000003009d54d54 in QMetaObject::activate (sender=0x208cd60, m=<value optimized out>, local_signal_index=11, argv=0x7fff659baba0) at kernel/qobject.cpp:3182
#6  0x0000003000821faf in PackageKit::Transaction::finished(PackageKit::Transaction::ExitStatus, unsigned int) () from /usr/lib64/libpackagekit-qt.so.12
#7  0x000000300081de39 in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib64/libpackagekit-qt.so.12
#8  0x000000300081f288 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libpackagekit-qt.so.12
#9  0x0000003009d5408c in QMetaObject::activate (sender=0x21ada70, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x7fff659bad80) at kernel/qobject.cpp:3112
#10 0x00000030054558cf in QDBusConnectionInterface::serviceOwnerChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>, _t3=)
    at .moc/release-shared/moc_qdbusconnectioninterface.cpp:204
#11 0x0000003005455b64 in QDBusConnectionInterface::qt_metacall (this=0x21ada70, _c=InvokeMetaMethod, _id=2, _a=0x7fff659bb000) at .moc/release-shared/moc_qdbusconnectioninterface.cpp:131
#12 0x0000003009d5408c in QMetaObject::activate (sender=0x21ada70, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x7fff659bb000) at kernel/qobject.cpp:3112
#13 0x00000030054557ff in QDBusConnectionInterface::NameOwnerChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>, _t3=)
    at .moc/release-shared/moc_qdbusconnectioninterface.cpp:232
#14 0x0000003005455bcc in QDBusConnectionInterface::qt_metacall (this=0x21ada70, _c=InvokeMetaMethod, _id=6, _a=0x7fff659bb410) at .moc/release-shared/moc_qdbusconnectioninterface.cpp:135
#15 0x0000003005422e84 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:891
#16 0x000000300542a61f in QDBusCallDeliveryEvent::placeMetaCall(QObject*) () from /usr/lib64/libQtDBus.so.4
#17 0x0000003009d4e401 in QObject::event (this=0x21ada70, e=0x24dded0) at kernel/qobject.cpp:1110
#18 0x000000300d98f65c in QApplicationPrivate::notify_helper (this=0x1fb10c0, receiver=0x21ada70, e=0x24dded0) at kernel/qapplication.cpp:4065
#19 0x000000300d9968ce in QApplication::notify (this=<value optimized out>, receiver=0x21ada70, e=0x24dded0) at kernel/qapplication.cpp:4030
#20 0x000000300e5f68e6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#21 0x0000003009d3ee6c in QCoreApplication::notifyInternal (this=0x7fff659bbdb0, receiver=0x21ada70, event=0x24dded0) at kernel/qcoreapplication.cpp:610
#22 0x0000003009d3fa42 in sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1f8c970) at kernel/qcoreapplication.h:213
#23 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1f8c970) at kernel/qcoreapplication.cpp:1247
#24 0x0000003009d67573 in sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:218
#25 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#26 0x000000300323920e in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#27 0x000000300323cbf8 in ?? () from /lib64/libglib-2.0.so.0
#28 0x000000300323cd1a in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#29 0x0000003009d671e6 in QEventDispatcherGlib::processEvents (this=0x1f8c180, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#30 0x000000300da21ffe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#31 0x0000003009d3d772 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#32 0x0000003009d3db44 in QEventLoop::exec (this=0x7fff659bbd00, flags=...) at kernel/qeventloop.cpp:201
#33 0x0000003009d3fcd9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#34 0x0000000000406082 in _start ()

Reported using DrKonqi