Version:            (using Devel)
Installed from:    Compiled sources

How to reproduce: 
1) select an article
2) click "Scoring" then "lower score for author" or "increase score for author"
3) a rule is created and a dialog appears.
4) select the newly created rules and click on the red X to delete the rule
5) click "apply" button
6) BOOOOOM. knode crashing!

Trace:


Application: Kontact (kontact), signal SIGSEGV
[Thread debugging using libthread_db enabled]
[New Thread 0xb525f720 (LWP 4677)]
[KCrash handler]
#6  0xb7994afe in KDialog::slotButtonClicked ()
   from /opt/kde4/lib/libkdeui.so.5
#7  0xb7994f48 in KDialog::qt_metacall () from /opt/kde4/lib/libkdeui.so.5
#8  0xb6b2376a in KPIM::KScoringEditor::qt_metacall ()
   from /opt/kde4/lib/libkdepim.so.4
#9  0xb7f010bc in QMetaObject::activate (sender=0x8c94c58, 
    from_signal_index=<value optimized out>, to_signal_index=4, argv=0x1)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qobject.cpp:3007
#10 0xb7f014c2 in QMetaObject::activate (sender=0x8c94c58, m=0xb7f8c9f8, 
    local_signal_index=0, argv=0xbfb1cadc)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qobject.cpp:3080
#11 0xb7f06f33 in QSignalMapper::mapped (this=0x8c94c58, _t1=4)
    at .moc/release-shared/moc_qsignalmapper.cpp:93
#12 0xb7f0742d in QSignalMapper::map (this=0x8c94c58, sender=0x8c72370)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qsignalmapper.cpp:277
#13 0xb7f075fe in QSignalMapper::map (this=0x8c94c58)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qsignalmapper.cpp:268
#14 0xb7f07997 in QSignalMapper::qt_metacall (this=0x8c94c58, 
    _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfb1cc5c)
    at .moc/release-shared/moc_qsignalmapper.cpp:80
#15 0xb7f010bc in QMetaObject::activate (sender=0x8c72370, 
    from_signal_index=<value optimized out>, to_signal_index=30, argv=0x1)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qobject.cpp:3007
#16 0xb7f013d0 in QMetaObject::activate (sender=0x8c72370, m=0xb615abc4, 
    from_local_signal_index=2, to_local_signal_index=3, argv=0xbfb1cc5c)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qobject.cpp:3100
#17 0xb6095a61 in QAbstractButton::clicked (this=0x8c72370, _t1=false)
    at .moc/release-shared/moc_qabstractbutton.cpp:185
#18 0xb5e3e699 in QAbstractButtonPrivate::emitClicked (this=0x84498c8)
    at /usr/src/kde4/qt-copy/src/gui/widgets/qabstractbutton.cpp:543
#19 0xb5e3ed50 in QAbstractButtonPrivate::click (this=0x84498c8)
    at /usr/src/kde4/qt-copy/src/gui/widgets/qabstractbutton.cpp:536
#20 0xb5e3ef8b in QAbstractButton::mouseReleaseEvent (this=0x8c72370, 
    e=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/gui/widgets/qabstractbutton.cpp:1112
#21 0xb5b9b92a in QWidget::event (this=0x8c72370, event=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qwidget.cpp:6927
#22 0xb5e3f5ef in QAbstractButton::event (this=0x8c72370, e=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/gui/widgets/qabstractbutton.cpp:1074
#23 0xb5ed02a2 in QPushButton::event (this=0x8c72370, e=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/gui/widgets/qpushbutton.cpp:658
#24 0xb5b4cc0c in QApplicationPrivate::notify_helper (this=0x8065578, 
    receiver=0x8c72370, e=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication.cpp:3772
#25 0xb5b53bf5 in QApplication::notify (this=0xbfb1d9d4, receiver=0x8c72370, 
    e=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication.cpp:3501
#26 0xb7a2515d in KApplication::notify () from /opt/kde4/lib/libkdeui.so.5
#27 0xb7ef0979 in QCoreApplication::notifyInternal (this=0xbfb1d9d4, 
    receiver=0x8c72370, event=0xbfb1d22c)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qcoreapplication.cpp:583
#28 0xb5b52d00 in QApplicationPrivate::sendMouseEvent (receiver=0x8c72370, 
    event=0xbfb1d22c, alienWidget=0x8c72370, nativeWidget=0x8c60ca8, 
    buttonDown=0xb6166750, lastMouseReceiver=@0xb6166754)
    at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:218
#29 0xb5bae5ad in QETWidget::translateMouseEvent (this=0x8c60ca8, 
    event=0xbfb1d738)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication_x11.cpp:4133
#30 0xb5badca7 in QApplication::x11ProcessEvent (this=0xbfb1d9d4, 
    event=0xbfb1d738)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication_x11.cpp:3133
#31 0xb5bd287a in x11EventSourceDispatch (s=0x8068438, callback=0, 
    user_data=0x0)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:148
#32 0xb56c9bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#33 0xb56cce5e in ?? () from /usr/lib/libglib-2.0.so.0
#34 0xb56cd3ac in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#35 0xb7f17968 in QEventDispatcherGlib::processEvents (this=0x805f730, 
    flags=@0xbfb1d8d8)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:325
#36 0xb5bd2675 in QGuiEventDispatcherGlib::processEvents (this=0x805f730, 
    flags=@0xbfb1d908)
    at /usr/src/kde4/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:204
#37 0xb7eefbfd in QEventLoop::processEvents (this=0xbfb1d960, 
    flags=@0xbfb1d934)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventloop.cpp:149
#38 0xb7eefd91 in QEventLoop::exec (this=0xbfb1d960, flags=@0xbfb1d968)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventloop.cpp:196
#39 0xb7ef203a in QCoreApplication::exec ()
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qcoreapplication.cpp:845
#40 0xb5b4c307 in QApplication::exec ()
    at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication.cpp:3304
#41 0x0804bd8c in main ()
#0  0xb7f93410 in __kernel_vsyscall ()