Application that crashed: kded4
Version of the application: $Id: kded.cpp 944898 2009-03-26 13:01:25Z dfaure $
KDE Version: 4.2.95 (KDE 4.2.95 (KDE 4.3 RC1))
Qt Version: 4.5.2
Operating System: Linux 2.6.30-ARCH x86_64

What I was doing when the application crashed:
While trying to connect to my wireless router (WPA-PSK encrypted) plasma-desktop crashed, caused by the networkmanager plasmoid

 -- Backtrace:
Application: KDE-Dienst (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#5  0x0000000002563c60 in ?? ()
#6  0x00007f1b2a34afbf in Wireless80211SecurityWidget::writeConfig () from /usr/lib/libknmui.so.4
#7  0x00007f1b2a9eb3f4 in ConnectionSecretsJob::dialogAccepted () from /usr/lib/kde4/kded_knetworkmanager.so
#8  0x00007f1b2a9ec354 in ConnectionSecretsJob::qt_metacall () from /usr/lib/kde4/kded_knetworkmanager.so
#9  0x00007f1b3d4d1a8c in QMetaObject::activate (sender=0x25455f0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x242c078) at kernel/qobject.cpp:3113
#10 0x00007f1b3be07b58 in KDialog::slotButtonClicked () from /usr/lib/libkdeui.so.5
#11 0x00007f1b3be09d49 in KDialog::qt_metacall () from /usr/lib/libkdeui.so.5
#12 0x00007f1b3d4d1a8c in QMetaObject::activate (sender=0x2533058, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x242c078) at kernel/qobject.cpp:3113
#13 0x00007f1b3d4d45be in QSignalMapper::mapped (this=0x7fff7b338d40, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:95
#14 0x00007f1b3d4d57b0 in QSignalMapper::map (this=0x2533058, sender=0x2549600) at kernel/qsignalmapper.cpp:266
#15 0x00007f1b3d4d5a20 in QSignalMapper::qt_metacall (this=0x2533058, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff7b339260) at .moc/release-shared/moc_qsignalmapper.cpp:81
#16 0x00007f1b3d4d1a8c in QMetaObject::activate (sender=0x2549600, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x242c078) at kernel/qobject.cpp:3113
#17 0x00007f1b3b8604e7 in QAbstractButton::clicked (this=0x7fff7b338d40, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#18 0x00007f1b3b5c44eb in QAbstractButtonPrivate::emitClicked (this=0x2508fb0) at widgets/qabstractbutton.cpp:543
#19 0x00007f1b3b5c60fb in QAbstractButtonPrivate::click (this=0x2508fb0) at widgets/qabstractbutton.cpp:536
#20 0x00007f1b3b5c6345 in QAbstractButton::mouseReleaseEvent (this=0x2549600, e=0x7fff7b339b00) at widgets/qabstractbutton.cpp:1115
#21 0x00007f1b3b2b1810 in QWidget::event (this=0x2549600, event=0x7fff7b339b00) at kernel/qwidget.cpp:7549
#22 0x00007f1b3b262dec in QApplicationPrivate::notify_helper (this=0x220fe20, receiver=0x2549600, e=0x7fff7b339b00) at kernel/qapplication.cpp:4056
#23 0x00007f1b3b269f01 in QApplication::notify (this=<value optimized out>, receiver=0x2549600, e=0x7fff7b339b00) at kernel/qapplication.cpp:3758
#24 0x00007f1b3be92ce6 in KApplication::notify () from /usr/lib/libkdeui.so.5
#25 0x00007f1b3d4bc9bc in QCoreApplication::notifyInternal (this=0x7fff7b33b860, receiver=0x2549600, event=0x7fff7b339b00) at kernel/qcoreapplication.cpp:610
#26 0x00007f1b3b2697d0 in QApplicationPrivate::sendMouseEvent (receiver=0x2549600, event=0x7fff7b339b00, alienWidget=0x2549600, nativeWidget=0x25455f0, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#27 0x00007f1b3b2cf6a4 in QETWidget::translateMouseEvent (this=0x25455f0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#28 0x00007f1b3b2ce399 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff7b33b490) at kernel/qapplication_x11.cpp:3550
#29 0x00007f1b3b2f656c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#30 0x00007f1b3a1b5dbe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0x00007f1b3a1b9568 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#32 0x00007f1b3a1b9690 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0x00007f1b3d4e4ec6 in QEventDispatcherGlib::processEvents (this=0x21696f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#34 0x00007f1b3b2f5d4e in QGuiEventDispatcherGlib::processEvents (this=0x7fff7b338d40, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#35 0x00007f1b3d4bb2c2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#36 0x00007f1b3d4bb694 in QEventLoop::exec (this=0x7fff7b33b7b0, flags=) at kernel/qeventloop.cpp:201
#37 0x00007f1b3d4bd849 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#38 0x00007f1b313beb8b in kdemain () from /usr/lib/libkdeinit4_kded4.so
#39 0x0000000000406e0e in _start ()

Reported using DrKonqi