Application that crashed: kontact
Version of the application: 4.3.0 pre
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.1
Operating System: Linux 2.6.30-8-generic i686
Distribution: Ubuntu karmic (development branch)

What I was doing when the application crashed:
I was configring the toolbar on the akregator view. It crashed when pressed the ok button on the toolbar configuration window

 -- Backtrace:
Application: Kontact (kontact), signal: Aborted
[KCrash Handler]
#6  0x00407422 in __kernel_vsyscall ()
#7  0x00bd7770 in *__GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#8  0x00bd9138 in *__GI_abort () at abort.c:88
#9  0x00c1b793 in malloc_printerr (action=2, str=0xced721 "free(): invalid pointer", ptr=0x9628670) at malloc.c:5999
#10 0x00c1d6b5 in *__GI___libc_free (mem=0x9628670) at malloc.c:3589
#11 0x018d98fd in qFree (ptr=0x9628670) at global/qmalloc.cpp:60
#12 0x01925630 in QString::free (d=0x9628670) at tools/qstring.cpp:953
#13 0x00e05625 in ~QDomNodePrivate (this=0x9506b28) at ../../include/QtCore/../../src/corelib/tools/qstring.h:866
#14 0x00e1085a in ~QDomTextPrivate (this=0x9506b28) at dom/qdom.cpp:323
#15 0x00e05590 in ~QDomNodePrivate (this=0x8c95d10) at dom/qdom.cpp:1496
#16 0x00e107ea in ~QDomAttrPrivate (this=0x8c95d10) at dom/qdom.cpp:357
#17 0x00e03f50 in QDomNamedNodeMapPrivate::clearMap (this=0x944f130) at dom/qdom.cpp:3086
#18 0x00e040c2 in ~QDomNamedNodeMapPrivate (this=0x944f130) at dom/qdom.cpp:3058
#19 0x00e068b1 in ~QDomElementPrivate (this=0x8b15178) at dom/qdom.cpp:4432
#20 0x00e05590 in ~QDomNodePrivate (this=0x8a9ca90) at dom/qdom.cpp:1496
#21 0x00e068c1 in ~QDomElementPrivate (this=0x8a9ca90) at dom/qdom.cpp:4433
#22 0x00e05590 in ~QDomNodePrivate (this=0x9465200) at dom/qdom.cpp:1496
#23 0x00e05730 in ~QDomDocumentPrivate (this=0x9465200) at dom/qdom.cpp:6202
#24 0x00dfdbee in QDomNode::operator= (this=0x8414268, n=@0xbff683fc) at dom/qdom.cpp:2062
#25 0x00dffff4 in QDomDocument::operator= (this=0x8414268, x=@0xbff683fc) at dom/qdom.cpp:6648
#26 0x0070d9c8 in KXMLGUIClient::setDOMDocument (this=0x82ecde0, document=@0xbff683fc, merge=false) at ../../kdeui/xmlgui/kxmlguiclient.cpp:270
#27 0x0070de68 in KXMLGUIClient::setXML (this=0x82ecde0, document=@0xbff684b8, merge=6) at ../../kdeui/xmlgui/kxmlguiclient.cpp:236
#28 0x0070f76f in KXMLGUIClient::setXMLFile (this=0x82ecde0, _file=@0xbff6857c, merge=177, setXMLDoc=true) at ../../kdeui/xmlgui/kxmlguiclient.cpp:219
#29 0x005498b2 in KDEPrivate::KEditToolBarWidget::rebuildKXMLGUIClients (this=0x98d29b8) at ../../kdeui/dialogs/kedittoolbar.cpp:809
#30 0x0054ac71 in KDEPrivate::KEditToolBarWidget::save (this=0x98d29b8) at ../../kdeui/dialogs/kedittoolbar.cpp:769
#31 0x0054ae45 in KEditToolBarPrivate::_k_slotApply (this=0x98d4980) at ../../kdeui/dialogs/kedittoolbar.cpp:613
#32 0x0054ddfe in KEditToolBar::qt_metacall (this=0xbff6aa88, _c=QMetaObject::InvokeMetaMethod, _id=76, _a=0xbff6871c) at ./kedittoolbar.moc:79
#33 0x019e7d78 in QMetaObject::activate (sender=0xbff6aa88, from_signal_index=43, to_signal_index=43, argv=0x0) at kernel/qobject.cpp:3120
#34 0x019e8a12 in QMetaObject::activate (sender=0xbff6aa88, m=0x7d00c4, local_signal_index=7, argv=0x0) at kernel/qobject.cpp:3194
#35 0x0053e6f7 in KDialog::applyClicked (this=0xbff6aa88) at ./kdialog.moc:240
#36 0x00540e5a in KDialog::slotButtonClicked (this=0xbff6aa88, button=8) at ../../kdeui/dialogs/kdialog.cpp:858
#37 0x005434f9 in KDialog::qt_metacall (this=0xbff6aa88, _c=QMetaObject::InvokeMetaMethod, _id=33, _a=0xbff68918) at ./kdialog.moc:184
#38 0x0054dd8a in KEditToolBar::qt_metacall (this=0xbff6aa88, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbff68918) at ./kedittoolbar.moc:71
#39 0x019e7d78 in QMetaObject::activate (sender=0x98ce760, from_signal_index=4, to_signal_index=4, argv=0xbff68918) at kernel/qobject.cpp:3120
#40 0x019e8a12 in QMetaObject::activate (sender=0x98ce760, m=0x1ac3878, local_signal_index=0, argv=0xbff68918) at kernel/qobject.cpp:3194
#41 0x019ea9c3 in QSignalMapper::mapped (this=0x98ce760, _t1=8) at .moc/release-shared/moc_qsignalmapper.cpp:95
#42 0x019eb28d in QSignalMapper::map (this=0x98ce760, sender=0x98df028) at kernel/qsignalmapper.cpp:266
#43 0x019eb46e in QSignalMapper::map (this=0x98ce760) at kernel/qsignalmapper.cpp:257
#44 0x019ebcab in QSignalMapper::qt_metacall (this=0x98ce760, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbff68ae8) at .moc/release-shared/moc_qsignalmapper.cpp:81
#45 0x019e7d78 in QMetaObject::activate (sender=0x98df028, from_signal_index=29, to_signal_index=30, argv=0xbff68ae8) at kernel/qobject.cpp:3120
#46 0x019e8208 in QMetaObject::activate (sender=0x98df028, m=0x18851e4, from_local_signal_index=2, to_local_signal_index=3, argv=0xbff68ae8) at kernel/qobject.cpp:3214
#47 0x0169f0a1 in QAbstractButton::clicked (this=0x98df028, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#48 0x013c58b9 in QAbstractButtonPrivate::emitClicked (this=0x98e0c40) at widgets/qabstractbutton.cpp:543
#49 0x013c7554 in QAbstractButtonPrivate::click (this=0x98e0c40) at widgets/qabstractbutton.cpp:536
#50 0x013c77e1 in QAbstractButton::mouseReleaseEvent (this=0x98df028, e=0xbff690e0) at widgets/qabstractbutton.cpp:1115
#51 0x010315b7 in QWidget::event (this=0x98df028, event=0xbff690e0) at kernel/qwidget.cpp:7521
#52 0x013c574e in QAbstractButton::event (this=0x98df028, e=0x6) at widgets/qabstractbutton.cpp:1077
#53 0x014712ad in QPushButton::event (this=0x98df028, e=0xbff690e0) at widgets/qpushbutton.cpp:662
#54 0x00fdbc1c in QApplicationPrivate::notify_helper (this=0x82e62a0, receiver=0x98df028, e=0xbff690e0) at kernel/qapplication.cpp:4057
#55 0x00fe3ccb in QApplication::notify (this=0xbff6d544, receiver=0x98df028, e=0xbff690e0) at kernel/qapplication.cpp:3759
#56 0x005da04a in KApplication::notify (this=0xbff6d544, receiver=0x98df028, event=0xbff690e0) at ../../kdeui/kernel/kapplication.cpp:302
#57 0x019d1b1b in QCoreApplication::notifyInternal (this=0xbff6d544, receiver=0x98df028, event=0xbff690e0) at kernel/qcoreapplication.cpp:610
#58 0x00fe2d4e in QApplicationPrivate::sendMouseEvent (receiver=0x98df028, event=0xbff690e0, alienWidget=0x98df028, nativeWidget=0xbff6aa88, buttonDown=0x188caa0, lastMouseReceiver=@0x188caa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#59 0x01052310 in QETWidget::translateMouseEvent (this=0xbff6aa88, event=0xbff6a72c) at kernel/qapplication_x11.cpp:4448
#60 0x0105175a in QApplication::x11ProcessEvent (this=0xbff6d544, event=0xbff6a72c) at kernel/qapplication_x11.cpp:3444
#61 0x0107e292 in x11EventSourceDispatch (s=0x82ea8b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#62 0x0313fad8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#63 0x03143070 in ?? () from /usr/lib/libglib-2.0.so.0
#64 0x031431a3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#65 0x019fcf9c in QEventDispatcherGlib::processEvents (this=0x82ddeb8, flags={i = 100}) at kernel/qeventdispatcher_glib.cpp:324
#66 0x0107d975 in QGuiEventDispatcherGlib::processEvents (this=0x82ddeb8, flags={i = 100}) at kernel/qguieventdispatcher_glib.cpp:202
#67 0x019d00a9 in QEventLoop::processEvents (this=0xbff6aa20, flags=) at kernel/qeventloop.cpp:149
#68 0x019d04f2 in QEventLoop::exec (this=0xbff6aa20, flags={i = 64}) at kernel/qeventloop.cpp:200
#69 0x014ff843 in QDialog::exec (this=0xbff6aa88) at dialogs/qdialog.cpp:498
#70 0x00b94072 in Kontact::MainWindow::configureToolbars () from /usr/lib/libkontactprivate.so.4
#71 0x00b9ba90 in Kontact::MainWindow::qt_metacall () from /usr/lib/libkontactprivate.so.4
#72 0x019e7d78 in QMetaObject::activate (sender=0x83ed890, from_signal_index=5, to_signal_index=6, argv=0xbff6ac38) at kernel/qobject.cpp:3120
#73 0x019e8208 in QMetaObject::activate (sender=0x83ed890, m=0x1873f08, from_local_signal_index=1, to_local_signal_index=2, argv=0xbff6ac38) at kernel/qobject.cpp:3214
#74 0x00fd5531 in QAction::triggered (this=0x83ed890, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#75 0x00fd6ab2 in QAction::activate (this=0x83ed890, event=QAction::Trigger) at kernel/qaction.cpp:1160
#76 0x0145a2fc in QMenuPrivate::activateCausedStack (this=0x98c78a0, causedStack=@0xbff6ad4c, action=0x83ed890, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#77 0x01460a0b in QMenuPrivate::activateAction (this=0x98c78a0, action=0x83ed890, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1060
#78 0x014615d7 in QMenu::mouseReleaseEvent (this=0x98cc5f0, e=0xbff6b390) at widgets/qmenu.cpp:2254
#79 0x006c4135 in KMenu::mouseReleaseEvent (this=0x98cc5f0, e=0xbff6b390) at ../../kdeui/widgets/kmenu.cpp:456
#80 0x010315b7 in QWidget::event (this=0x98cc5f0, event=0xbff6b390) at kernel/qwidget.cpp:7521
#81 0x014638dc in QMenu::event (this=0x98cc5f0, e=0xbff6b390) at widgets/qmenu.cpp:2353
#82 0x00fdbc1c in QApplicationPrivate::notify_helper (this=0x82e62a0, receiver=0x98cc5f0, e=0xbff6b390) at kernel/qapplication.cpp:4057
#83 0x00fe3ccb in QApplication::notify (this=0xbff6d544, receiver=0x98cc5f0, e=0xbff6b390) at kernel/qapplication.cpp:3759
#84 0x005da04a in KApplication::notify (this=0xbff6d544, receiver=0x98cc5f0, event=0xbff6b390) at ../../kdeui/kernel/kapplication.cpp:302
#85 0x019d1b1b in QCoreApplication::notifyInternal (this=0xbff6d544, receiver=0x98cc5f0, event=0xbff6b390) at kernel/qcoreapplication.cpp:610
#86 0x00fe2d4e in QApplicationPrivate::sendMouseEvent (receiver=0x98cc5f0, event=0xbff6b390, alienWidget=0x0, nativeWidget=0x98cc5f0, buttonDown=0x188caa0, lastMouseReceiver=@0x188caa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#87 0x010527ff in QETWidget::translateMouseEvent (this=0x98cc5f0, event=0xbff6c9dc) at kernel/qapplication_x11.cpp:4382
#88 0x0105175a in QApplication::x11ProcessEvent (this=0xbff6d544, event=0xbff6c9dc) at kernel/qapplication_x11.cpp:3444
#89 0x0107e292 in x11EventSourceDispatch (s=0x82ea8b0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#90 0x0313fad8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#91 0x03143070 in ?? () from /usr/lib/libglib-2.0.so.0
#92 0x031431a3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#93 0x019fcf9c in QEventDispatcherGlib::processEvents (this=0x82ddeb8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:324
#94 0x0107d975 in QGuiEventDispatcherGlib::processEvents (this=0x82ddeb8, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#95 0x019d00a9 in QEventLoop::processEvents (this=0xbff6ccd0, flags=) at kernel/qeventloop.cpp:149
#96 0x019d04f2 in QEventLoop::exec (this=0xbff6ccd0, flags={i = 0}) at kernel/qeventloop.cpp:200
#97 0x0146372e in QMenu::exec (this=0x98cc5f0, p=@0x984dde0, action=0x0) at widgets/qmenu.cpp:1993
#98 0x006fd168 in KToolBar::contextMenuEvent (this=0x8887e58, event=0x984ddc8) at ../../kdeui/widgets/ktoolbar.cpp:722
#99 0x01031fca in QWidget::event (this=0x8887e58, event=0x984ddc8) at kernel/qwidget.cpp:7680
#100 0x014a7167 in QToolBar::event (this=0x8887e58, event=0x984ddc8) at widgets/qtoolbar.cpp:1193
#101 0x00fdbc1c in QApplicationPrivate::notify_helper (this=0x82e62a0, receiver=0x8887e58, e=0x984ddc8) at kernel/qapplication.cpp:4057
#102 0x00fe3893 in QApplication::notify (this=0xbff6d544, receiver=0x8887e58, e=0x984ddc8) at kernel/qapplication.cpp:3846
#103 0x005da04a in KApplication::notify (this=0xbff6d544, receiver=0x8887e58, event=0x984ddc8) at ../../kdeui/kernel/kapplication.cpp:302
#104 0x019d1b1b in QCoreApplication::notifyInternal (this=0xbff6d544, receiver=0x8887e58, event=0x984ddc8) at kernel/qcoreapplication.cpp:610
#105 0x019d25e8 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x82c0278) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#106 0x019d27bd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#107 0x019fd36f in postEventSourceDispatch (s=0x82e9d20) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#108 0x0313fad8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#109 0x03143070 in ?? () from /usr/lib/libglib-2.0.so.0
#110 0x031431a3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#111 0x019fcf9c in QEventDispatcherGlib::processEvents (this=0x82ddeb8, flags={i = 36}) at kernel/qeventdispatcher_glib.cpp:324
#112 0x0107d975 in QGuiEventDispatcherGlib::processEvents (this=0x82ddeb8, flags={i = 36}) at kernel/qguieventdispatcher_glib.cpp:202
#113 0x019d00a9 in QEventLoop::processEvents (this=0xbff6d4a4, flags=) at kernel/qeventloop.cpp:149
#114 0x019d04f2 in QEventLoop::exec (this=0xbff6d4a4, flags={i = 0}) at kernel/qeventloop.cpp:200
#115 0x019d287f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#116 0x00fdba97 in QApplication::exec () at kernel/qapplication.cpp:3526
#117 0x0804b4d6 in _start ()

Reported using DrKonqi