Application that crashed: kded4
Version of the application: $Id: kded.cpp 944898 2009-03-26 13:01:25Z dfaure $
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.29.6-desktop-2mnb i686
Distribution: "Mandriva Linux 2009.1"

What I was doing when the application crashed:
dont know how it happens just a dialog box appears and says kde daemon crashed unexpectadly

 -- Backtrace:
Application: KDE Daemon (kdeinit4), signal: Aborted
[KCrash Handler]
#6  0xffffe424 in __kernel_vsyscall ()
#7  0xb6718c00 in raise () from /lib/i686/libc.so.6
#8  0xb671a668 in abort () from /lib/i686/libc.so.6
#9  0xb7de2d65 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb7de2e5c in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb7de2f55 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb21d924a in PackageKit::Util::enumToString<PackageKit::Client> () from /usr/lib/libpackagekit-qt.so.11
#13 0xb21cdf37 in PackageKit::Client::getTimeSinceAction () from /usr/lib/libpackagekit-qt.so.11
#14 0xb2229567 in ?? () from /usr/lib/kde4/kded_kpackagekitd.so
#15 0xb2228f1c in ?? () from /usr/lib/kde4/kded_kpackagekitd.so
#16 0xb7efd065 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0xb7efdd65 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#18 0xb7f3ac15 in QTimer::timeout () from /usr/lib/libQtCore.so.4
#19 0xb7f03776 in QTimer::timerEvent () from /usr/lib/libQtCore.so.4
#20 0xb7ef7dbb in QObject::event () from /usr/lib/libQtCore.so.4
#21 0xb6a42b1c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#22 0xb6a4b276 in QApplication::notify () from /usr/lib/libQtGui.so.4
#23 0xb74bc7fb in KApplication::notify () from /usr/lib/libkdeui.so.5
#24 0xb7ee723e in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#25 0xb7f179bd in ?? () from /usr/lib/libQtCore.so.4
#26 0xb7f14145 in ?? () from /usr/lib/libQtCore.so.4
#27 0xb663fcea in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0xb6643354 in ?? () from /usr/lib/libglib-2.0.so.0
#29 0xb66434df in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0xb7f13e43 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#31 0xb6ae7bba in ?? () from /usr/lib/libQtGui.so.4
#32 0xb7ee5803 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#33 0xb7ee5c5d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#34 0xb7ee81b6 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#35 0xb6a42984 in QApplication::exec () from /usr/lib/libQtGui.so.4
#36 0xb5b77bb7 in kdemain () from /usr/lib/libkdeinit4_kded4.so
#37 0x0804de62 in _start ()

Reported using DrKonqi