Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Kontact crashed when clicking on Customize toolbar in KJots part.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f0cf01fc00d in KDEPrivate::KEditToolBarWidgetPrivate::initKPart (this=0x2fa2e90, factory=0x0, defaultToolBar=@0x2fa2ae0) at /build/buildd/kde4libs-4.3.2/kdeui/dialogs/kedittoolbar.cpp:713
#6  0x00007f0cf01fcb58 in KEditToolBar::showEvent (this=0x7ffffbdbd210, event=0x7ffffbdbd010) at /build/buildd/kde4libs-4.3.2/kdeui/dialogs/kedittoolbar.cpp:651
#7  0x00007f0ceeec9f24 in QWidget::event (this=0x7ffffbdbd210, event=0x7ffffbdbd010) at kernel/qwidget.cpp:7748
#8  0x00007f0ceee78f4d in QApplicationPrivate::notify_helper (this=0x1955f60, receiver=0x7ffffbdbd210, e=0x7ffffbdbd010) at kernel/qapplication.cpp:4056
#9  0x00007f0ceee8118a in QApplication::notify (this=0x7ffffbdbdf40, receiver=0x7ffffbdbd210, e=0x7ffffbdbd010) at kernel/qapplication.cpp:4021
#10 0x00007f0cf027dabb in KApplication::notify (this=0x7ffffbdbdf40, receiver=0x7ffffbdbd210, event=0x7ffffbdbd010) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#11 0x00007f0cee2f76ac in QCoreApplication::notifyInternal (this=0x7ffffbdbdf40, receiver=0x7ffffbdbd210, event=0x7ffffbdbd010) at kernel/qcoreapplication.cpp:610
#12 0x00007f0ceeeceef2 in QWidgetPrivate::show_helper (this=0x2fa08d0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 0x00007f0ceeecf48a in QWidget::setVisible (this=0x7ffffbdbd210, visible=<value optimized out>) at kernel/qwidget.cpp:6975
#14 0x00007f0cef310b7c in QDialog::setVisible (this=0x7ffffbdbd210, visible=<value optimized out>) at dialogs/qdialog.cpp:706
#15 0x00007f0cef30fdf5 in QDialog::exec (this=0x7ffffbdbd210) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:473
#16 0x00007f0cf2d31227 in Kontact::MainWindow::configureToolbars (this=0x1a445e0) at /build/buildd/kdepim-4.3.1/kontact/src/mainwindow.cpp:1058
#17 0x00007f0cf2d383ff in Kontact::MainWindow::qt_metacall (this=0x1a445e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x2e41fb0)
    at /build/buildd/kdepim-4.3.1/obj-x86_64-linux-gnu/kontact/src/mainwindow.moc:128
#18 0x00007f0cee3075d8 in QObject::event (this=0x1a445e0, e=0x1f75c30) at kernel/qobject.cpp:1111
#19 0x00007f0ceeec98ed in QWidget::event (this=0x1a445e0, event=0x1f75c30) at kernel/qwidget.cpp:7946
#20 0x00007f0cef25789b in QMainWindow::event (this=0x1a445e0, event=0x1f75c30) at widgets/qmainwindow.cpp:1399
#21 0x00007f0cf038aac8 in KXmlGuiWindow::event (this=0x7ffffbdbc9b0, ev=0x1d640c8) at /build/buildd/kde4libs-4.3.2/kdeui/xmlgui/kxmlguiwindow.cpp:131
#22 0x00007f0ceee78f4d in QApplicationPrivate::notify_helper (this=0x1955f60, receiver=0x1a445e0, e=0x1f75c30) at kernel/qapplication.cpp:4056
#23 0x00007f0ceee8118a in QApplication::notify (this=0x7ffffbdbdf40, receiver=0x1a445e0, e=0x1f75c30) at kernel/qapplication.cpp:4021
#24 0x00007f0cf027dabb in KApplication::notify (this=0x7ffffbdbdf40, receiver=0x1a445e0, event=0x1f75c30) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#25 0x00007f0cee2f76ac in QCoreApplication::notifyInternal (this=0x7ffffbdbdf40, receiver=0x1a445e0, event=0x1f75c30) at kernel/qcoreapplication.cpp:610
#26 0x00007f0cee2f831a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1917850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#27 0x00007f0cee320e03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#28 0x00007f0ce7a4520a in IA__g_main_context_dispatch (context=0x194d120) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#29 0x00007f0ce7a488e0 in g_main_context_iterate (context=0x194d120, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#30 0x00007f0ce7a48a7c in IA__g_main_context_iteration (context=0x194d120, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#31 0x00007f0cee320a8f in QEventDispatcherGlib::processEvents (this=0x19170a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#32 0x00007f0ceef11bdf in QGuiEventDispatcherGlib::processEvents (this=0x7ffffbdbc9b0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00007f0cee2f5f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -69476768}) at kernel/qeventloop.cpp:149
#34 0x00007f0cee2f6314 in QEventLoop::exec (this=0x7ffffbdbdea0, flags={i = -69476688}) at kernel/qeventloop.cpp:201
#35 0x00007f0cee2f85e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x0000000000404945 in main (argc=3, argv=0x7ffffbdbe628) at /build/buildd/kdepim-4.3.1/kontact/src/main.cpp:218

Reported using DrKonqi