Application that crashed: kontact
Version of the application: 4.3.0
KDE Version: 4.3.00 (KDE 4.3.0)
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:
I've adding a new button to toolbar in Calendersection. Then i select a other Modul (mails), kontact crash.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  QTextStream::operator<< (this=0x7f8aa53c3590, string=@0x7fffb399fa60) at io/qtextstream.cpp:2510
#6  0x00007f8aa74c0b9a in QDomElementPrivate::save (this=0x3ae5440, s=@0x7f8aa53c3590, depth=34393088, indent=66504592) at dom/qdom.cpp:4571
#7  0x00007f8aa74bae01 in QDomNamedNodeMapPrivate::clearMap (this=0x2418f00) at dom/qdom.cpp:3086
#8  0x00007f8aa74baed6 in ~QDomNamedNodeMapPrivate (this=0x6320726f20656572) at dom/qdom.cpp:3058
#9  0x00007f8aa74bd3da in ~QDomElementPrivate (this=0x32954d0) at dom/qdom.cpp:4432
#10 0x00007f8aa74bc1f9 in ~QDomNodePrivate (this=0x20a4050) at dom/qdom.cpp:1496
#11 0x00007f8aa74bd3ea in ~QDomElementPrivate (this=0x20a4050) at dom/qdom.cpp:4433
#12 0x00007f8aa74bc1f9 in ~QDomNodePrivate (this=0x3b57590) at dom/qdom.cpp:1496
#13 0x00007f8aa74bd3ea in ~QDomElementPrivate (this=0x3b57590) at dom/qdom.cpp:4433
#14 0x00007f8aa74bc1f9 in ~QDomNodePrivate (this=0x3293ee0) at dom/qdom.cpp:1496
#15 0x00007f8aa74bd3ea in ~QDomElementPrivate (this=0x3293ee0) at dom/qdom.cpp:4433
#16 0x00007f8aa74bc1f9 in ~QDomNodePrivate (this=0x23fcdd0) at dom/qdom.cpp:1496
#17 0x00007f8aa74bc392 in ~QDomDocumentPrivate (this=0x23fcdd0) at dom/qdom.cpp:6202
#18 0x00007f8aa74b674a in QDomNode::operator= (this=0x38b3ca0, n=@0x7fffb399fd30) at dom/qdom.cpp:2062
#19 0x00007f8aa7f81e27 in KXMLGUIClient::setDOMDocument (this=0x33e5270, document=@0x7fffb399fd30, merge=42) at /build/buildd/kde4libs-4.3.0/kdeui/xmlgui/kxmlguiclient.cpp:270
#20 0x00007f8aa7f8274f in KXMLGUIClient::setXML (this=0x33e5270, document=@0x7fffb399fe90, merge=42) at /build/buildd/kde4libs-4.3.0/kdeui/xmlgui/kxmlguiclient.cpp:236
#21 0x00007f8aa7f8341f in KXMLGUIClient::setXMLFile (this=0x33e5270, _file=@0x7fffb399ffc0, merge=42, setXMLDoc=<value optimized out>)
    at /build/buildd/kde4libs-4.3.0/kdeui/xmlgui/kxmlguiclient.cpp:213
#22 0x00007f8aa7de9dca in KDEPrivate::KEditToolBarWidget::rebuildKXMLGUIClients (this=0x3c501c0) at /build/buildd/kde4libs-4.3.0/kdeui/dialogs/kedittoolbar.cpp:812
#23 0x00007f8aa7deb48b in KDEPrivate::KEditToolBarWidget::save (this=0x3c501c0) at /build/buildd/kde4libs-4.3.0/kdeui/dialogs/kedittoolbar.cpp:769
#24 0x00007f8aa7deb62d in KEditToolBarPrivate::_k_slotApply (this=0x32912d0) at /build/buildd/kde4libs-4.3.0/kdeui/dialogs/kedittoolbar.cpp:613
#25 0x00007f8aa7dedce9 in KEditToolBar::qt_metacall (this=0x7fffb39a2c70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb39a0230)
    at /build/buildd/kde4libs-4.3.0/obj-x86_64-linux-gnu/kdeui/kedittoolbar.moc:79
#26 0x00007f8aa5f00ea2 in QMetaObject::activate (sender=0x7fffb39a2c70, from_signal_index=<value optimized out>, to_signal_index=43, argv=0x7f8aa53698da) at kernel/qobject.cpp:3113
#27 0x00007f8aa7de2085 in KDialog::slotButtonClicked (this=0x7fffb39a2c70, button=8) at /build/buildd/kde4libs-4.3.0/kdeui/dialogs/kdialog.cpp:858
#28 0x00007f8aa7de429d in KDialog::qt_metacall (this=0x7fffb39a2c70, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb39a0400)
    at /build/buildd/kde4libs-4.3.0/obj-x86_64-linux-gnu/kdeui/kdialog.moc:184
#29 0x00007f8aa7dedc65 in KEditToolBar::qt_metacall (this=0x6320726f20656572, _c=3013212768, _id=992051242, _a=0x7f8aa53698da)
    at /build/buildd/kde4libs-4.3.0/obj-x86_64-linux-gnu/kdeui/kedittoolbar.moc:71
#30 0x00007f8aa5f00ea2 in QMetaObject::activate (sender=0x3c199d8, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x7f8aa53698da) at kernel/qobject.cpp:3113
#31 0x00007f8aa5f03c3e in QSignalMapper::mapped (this=0x6320726f20656572, _t1=8) at .moc/release-shared/moc_qsignalmapper.cpp:95
#32 0x00007f8aa5f044e0 in QSignalMapper::map (this=0x3c199d8, sender=0x3ee2390) at kernel/qsignalmapper.cpp:266
#33 0x00007f8aa5f050d0 in QSignalMapper::qt_metacall (this=0x3c199d8, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb39a0580) at .moc/release-shared/moc_qsignalmapper.cpp:81
#34 0x00007f8aa5f00ea2 in QMetaObject::activate (sender=0x3ee2390, from_signal_index=<value optimized out>, to_signal_index=30, argv=0x7f8aa53698da) at kernel/qobject.cpp:3113
#35 0x00007f8aa708be27 in QAbstractButton::clicked (this=0x6320726f20656572, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#36 0x00007f8aa6de5c6b in QAbstractButtonPrivate::emitClicked (this=0x3f4f710) at widgets/qabstractbutton.cpp:543
#37 0x00007f8aa6de78c2 in QAbstractButtonPrivate::click (this=0x3f4f710) at widgets/qabstractbutton.cpp:536
#38 0x00007f8aa6de7b15 in QAbstractButton::mouseReleaseEvent (this=0x3ee2390, e=0x7fffb39a0d50) at widgets/qabstractbutton.cpp:1115
#39 0x00007f8aa6abb0bf in QWidget::event (this=0x3ee2390, event=0x7fffb39a0d50) at kernel/qwidget.cpp:7549
#40 0x00007f8aa6a69f4d in QApplicationPrivate::notify_helper (this=0x1b9bf50, receiver=0x3ee2390, e=0x7fffb39a0d50) at kernel/qapplication.cpp:4056
#41 0x00007f8aa6a728ea in QApplication::notify (this=<value optimized out>, receiver=0x3ee2390, e=0x7fffb39a0d50) at kernel/qapplication.cpp:3758
#42 0x00007f8aa7e6e71b in KApplication::notify (this=0x7fffb39a7e80, receiver=0x3ee2390, event=0x7fffb39a0d50) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#43 0x00007f8aa5eeb6ac in QCoreApplication::notifyInternal (this=0x7fffb39a7e80, receiver=0x3ee2390, event=0x7fffb39a0d50) at kernel/qcoreapplication.cpp:610
#44 0x00007f8aa6a71b38 in QApplicationPrivate::sendMouseEvent (receiver=0x3ee2390, event=0x7fffb39a0d50, alienWidget=0x3ee2390, nativeWidget=0x7fffb39a2c70, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7f8aa74a1010) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#45 0x00007f8aa6adbb19 in QETWidget::translateMouseEvent (this=0x7fffb39a2c70, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#46 0x00007f8aa6adab53 in QApplication::x11ProcessEvent (this=0x7fffb39a7e80, event=0x7fffb39a28d0) at kernel/qapplication_x11.cpp:3550
#47 0x00007f8aa6b03454 in x11EventSourceDispatch (s=0x1b9fe20, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#48 0x00007f8a9f63c20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#49 0x00007f8a9f63f8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#50 0x00007f8a9f63fa7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#51 0x00007f8aa5f14a8f in QEventDispatcherGlib::processEvents (this=0x1b5f0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#52 0x00007f8aa6b02bdf in QGuiEventDispatcherGlib::processEvents (this=0x6320726f20656572, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#53 0x00007f8aa5ee9f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1281741888}) at kernel/qeventloop.cpp:149
#54 0x00007f8aa5eea314 in QEventLoop::exec (this=0x7fffb39a2c00, flags={i = -1281741792}) at kernel/qeventloop.cpp:201
#55 0x00007f8aa6f00e3e in QDialog::exec (this=0x7fffb39a2c70) at dialogs/qdialog.cpp:498
#56 0x00007f8aaa91e227 in Kontact::MainWindow::configureToolbars (this=0x1c2fd00) at /build/buildd/kdepim-4.3.0/kontact/src/mainwindow.cpp:1058
#57 0x00007f8aaa9253ff in Kontact::MainWindow::qt_metacall (this=0x1c2fd00, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffb39a2e50)
    at /build/buildd/kdepim-4.3.0/obj-x86_64-linux-gnu/kontact/src/mainwindow.moc:128
#58 0x00007f8aa5f00ea2 in QMetaObject::activate (sender=0x1f3f750, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x7f8aa53698da) at kernel/qobject.cpp:3113
#59 0x00007f8aa6a63f37 in QAction::triggered (this=0x6320726f20656572, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#60 0x00007f8aa6a653b0 in QAction::activate (this=0x1f3f750, event=<value optimized out>) at kernel/qaction.cpp:1160
#61 0x00007f8aa6e6c52d in QMenuPrivate::activateCausedStack (this=0x3e4fd80, causedStack=@0x7fffb39a2f70, action=0x1f3f750, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#62 0x00007f8aa6e7253e in QMenuPrivate::activateAction (this=0x3e4fd80, action=0x1f3f750, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1060
#63 0x00007f8aa7f41dc1 in KMenu::mouseReleaseEvent (this=0x348db90, e=0x7fffb39a3910) at /build/buildd/kde4libs-4.3.0/kdeui/widgets/kmenu.cpp:456
#64 0x00007f8aa6abb0bf in QWidget::event (this=0x348db90, event=0x7fffb39a3910) at kernel/qwidget.cpp:7549
#65 0x00007f8aa6e74d8b in QMenu::event (this=0x348db90, e=0x7fffb39a3910) at widgets/qmenu.cpp:2353
#66 0x00007f8aa6a69f4d in QApplicationPrivate::notify_helper (this=0x1b9bf50, receiver=0x348db90, e=0x7fffb39a3910) at kernel/qapplication.cpp:4056
#67 0x00007f8aa6a728ea in QApplication::notify (this=<value optimized out>, receiver=0x348db90, e=0x7fffb39a3910) at kernel/qapplication.cpp:3758
#68 0x00007f8aa7e6e71b in KApplication::notify (this=0x7fffb39a7e80, receiver=0x348db90, event=0x7fffb39a3910) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#69 0x00007f8aa5eeb6ac in QCoreApplication::notifyInternal (this=0x7fffb39a7e80, receiver=0x348db90, event=0x7fffb39a3910) at kernel/qcoreapplication.cpp:610
#70 0x00007f8aa6a71b38 in QApplicationPrivate::sendMouseEvent (receiver=0x348db90, event=0x7fffb39a3910, alienWidget=0x0, nativeWidget=0x348db90, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7f8aa74a1010) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#71 0x00007f8aa6adbcd4 in QETWidget::translateMouseEvent (this=0x348db90, event=<value optimized out>) at kernel/qapplication_x11.cpp:4343
#72 0x00007f8aa6adab53 in QApplication::x11ProcessEvent (this=0x7fffb39a7e80, event=0x7fffb39a5490) at kernel/qapplication_x11.cpp:3550
#73 0x00007f8aa6b03454 in x11EventSourceDispatch (s=0x1b9fe20, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#74 0x00007f8a9f63c20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#75 0x00007f8a9f63f8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#76 0x00007f8a9f63fa7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#77 0x00007f8aa5f14a8f in QEventDispatcherGlib::processEvents (this=0x1b5f0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#78 0x00007f8aa6b02bdf in QGuiEventDispatcherGlib::processEvents (this=0x6320726f20656572, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#79 0x00007f8aa5ee9f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1281730688}) at kernel/qeventloop.cpp:149
#80 0x00007f8aa5eea314 in QEventLoop::exec (this=0x7fffb39a57c0, flags={i = -1281730592}) at kernel/qeventloop.cpp:201
#81 0x00007f8aa6e74be5 in QMenu::exec (this=<value optimized out>, p=@0x7fffb39a5c50, action=0x0) at widgets/qmenu.cpp:1993
#82 0x00007f8aa7f72c00 in KToolBar::contextMenuEvent (this=0x3c51050, event=0x7fffb39a5c30) at /build/buildd/kde4libs-4.3.0/kdeui/widgets/ktoolbar.cpp:763
#83 0x00007f8aa6abb594 in QWidget::event (this=0x3c51050, event=0x7fffb39a5c30) at kernel/qwidget.cpp:7708
#84 0x00007f8aa6eb1deb in QToolBar::event (this=0x3c51050, event=0x7fffb39a5c30) at widgets/qtoolbar.cpp:1193
#85 0x00007f8aa6a69f4d in QApplicationPrivate::notify_helper (this=0x1b9bf50, receiver=0x3c51050, e=0x7fffb39a5c30) at kernel/qapplication.cpp:4056
#86 0x00007f8aa6a7262a in QApplication::notify (this=<value optimized out>, receiver=0x3c119c0, e=0x7fffb39a5f00) at kernel/qapplication.cpp:3845
#87 0x00007f8aa7e6e71b in KApplication::notify (this=0x7fffb39a7e80, receiver=0x3c119c0, event=0x7fffb39a5f00) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#88 0x00007f8aa5eeb6ac in QCoreApplication::notifyInternal (this=0x7fffb39a7e80, receiver=0x3c119c0, event=0x7fffb39a5f00) at kernel/qcoreapplication.cpp:610
#89 0x00007f8aa6adc15a in QETWidget::translateMouseEvent (this=0x1c2fd00, event=<value optimized out>) at kernel/qapplication_x11.cpp:4415
#90 0x00007f8aa6adab53 in QApplication::x11ProcessEvent (this=0x7fffb39a7e80, event=0x7fffb39a7ab0) at kernel/qapplication_x11.cpp:3550
#91 0x00007f8aa6b03454 in x11EventSourceDispatch (s=0x1b9fe20, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#92 0x00007f8a9f63c20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#93 0x00007f8a9f63f8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#94 0x00007f8a9f63fa7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#95 0x00007f8aa5f14a8f in QEventDispatcherGlib::processEvents (this=0x1b5f0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#96 0x00007f8aa6b02bdf in QGuiEventDispatcherGlib::processEvents (this=0x6320726f20656572, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#97 0x00007f8aa5ee9f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1281720928}) at kernel/qeventloop.cpp:149
#98 0x00007f8aa5eea314 in QEventLoop::exec (this=0x7fffb39a7de0, flags={i = -1281720848}) at kernel/qeventloop.cpp:201
#99 0x00007f8aa5eec5e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#100 0x0000000000404945 in main (argc=1, argv=0x7fffb39a8568) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:218

Reported using DrKonqi