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 2.6.31.6-166.fc12.x86_64 x86_64
Distribution: "Fedora release 12 (Constantine)"

What I was doing when the application crashed:
I was just reading Fedora 12 release notes, the screen blinked and the crash report indicated 2/3 stars... and in hope this can help... (kdebase-4.3.4-1.fc12.x86_64).

 -- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
The current source language is "auto; currently asm".
[KCrash Handler]
#5  0x00000031fa954d54 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib64/libQtCore.so.4
#6  0x00007fa0333b26cf in PackageKit::Transaction::finished(PackageKit::Transaction::ExitStatus, unsigned int) () from /usr/lib64/libpackagekit-qt.so.12
#7  0x00007fa0333ae089 in PackageKit::ClientPrivate::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib64/libpackagekit-qt.so.12
#8  0x00007fa0333af948 in PackageKit::ClientPrivate::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libpackagekit-qt.so.12
#9  0x00000031fa95408c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#10 0x00000031fb6558cf in QDBusConnectionInterface::serviceOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib64/libQtDBus.so.4
#11 0x00000031fb655b64 in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libQtDBus.so.4
#12 0x00000031fa95408c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib64/libQtCore.so.4
#13 0x00000031fb6557ff in QDBusConnectionInterface::NameOwnerChanged(QString const&, QString const&, QString const&) () from /usr/lib64/libQtDBus.so.4
#14 0x00000031fb655bcc in QDBusConnectionInterface::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib64/libQtDBus.so.4
#15 0x00000031fb622e84 in ?? () from /usr/lib64/libQtDBus.so.4
#16 0x00000031fb62a61f in ?? () from /usr/lib64/libQtDBus.so.4
#17 0x00000031fa94e401 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#18 0x000000311438f65c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#19 0x00000031143968ce in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#20 0x00007fa03d9c7a66 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#21 0x00000031fa93ee6c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#22 0x00000031fa93fa42 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#23 0x00000031fa967573 in ?? () from /usr/lib64/libQtCore.so.4
#24 0x0000003eba63922e in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#25 0x0000003eba63cc18 in ?? () from /lib64/libglib-2.0.so.0
#26 0x0000003eba63cd3a in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#27 0x00000031fa9671e6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#28 0x0000003114421ffe in ?? () from /usr/lib64/libQtGui.so.4
#29 0x00000031fa93d772 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#30 0x00000031fa93db44 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#31 0x00000031fa93fcd9 in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#32 0x00007fa03e2ae6eb in kdemain () from /usr/lib64/libkdeinit4_kded4.so
#33 0x0000003d53a1eb1d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=<value optimized out>) at libc-start.c:220
#34 0x0000000000400709 in _start ()

Reported using DrKonqi