Application that crashed: kontact
Version of the application: 4.3.2
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:
I was closing kontact normally through the Close X in the window title, the window closed, and then afterwards I was notified the application cored.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x0, event=0x7ffff79e8d30) at kernel/qcoreapplication.cpp:594
#6  0x00007f6beaaf746c in QWidget::event (this=<value optimized out>, event=0x7ffff79e8d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#7  0x00007f6beaaa5f4d in QApplicationPrivate::notify_helper (this=0x1a4f110, receiver=0x434d9b0, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4056
#8  0x00007f6beaaae18a in QApplication::notify (this=0x7ffff79ea9b0, receiver=0x434d9b0, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4021
#9  0x00007f6bebeaaabb in KApplication::notify (this=0x7ffff79ea9b0, receiver=0x434d9b0, event=0x7ffff79e8d30) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#10 0x00007f6be9f246ac in QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x434d9b0, event=0x7ffff79e8d30) at kernel/qcoreapplication.cpp:610
#11 0x00007f6beaaf746c in QWidget::event (this=<value optimized out>, event=0x7ffff79e8d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#12 0x00007f6beae69f0b in QFrame::event (this=0x1a464f0, e=0x7ffff79e8d30) at widgets/qframe.cpp:559
#13 0x00007f6beaaa5f4d in QApplicationPrivate::notify_helper (this=0x1a4f110, receiver=0x1a464f0, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4056
#14 0x00007f6beaaae18a in QApplication::notify (this=0x7ffff79ea9b0, receiver=0x1a464f0, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4021
#15 0x00007f6bebeaaabb in KApplication::notify (this=0x7ffff79ea9b0, receiver=0x1a464f0, event=0x7ffff79e8d30) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#16 0x00007f6be9f246ac in QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x1a464f0, event=0x7ffff79e8d30) at kernel/qcoreapplication.cpp:610
#17 0x00007f6beaaf746c in QWidget::event (this=<value optimized out>, event=0x7ffff79e8d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#18 0x00007f6beaaa5f4d in QApplicationPrivate::notify_helper (this=0x1a4f110, receiver=0x1a53e00, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4056
#19 0x00007f6beaaae18a in QApplication::notify (this=0x7ffff79ea9b0, receiver=0x1a53e00, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4021
#20 0x00007f6bebeaaabb in KApplication::notify (this=0x7ffff79ea9b0, receiver=0x1a53e00, event=0x7ffff79e8d30) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#21 0x00007f6be9f246ac in QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x1a53e00, event=0x7ffff79e8d30) at kernel/qcoreapplication.cpp:610
#22 0x00007f6beaaf746c in QWidget::event (this=<value optimized out>, event=0x7ffff79e8d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#23 0x00007f6beaaa5f4d in QApplicationPrivate::notify_helper (this=0x1a4f110, receiver=0x1a89c50, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4056
#24 0x00007f6beaaae18a in QApplication::notify (this=0x7ffff79ea9b0, receiver=0x1a89c50, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4021
#25 0x00007f6bebeaaabb in KApplication::notify (this=0x7ffff79ea9b0, receiver=0x1a89c50, event=0x7ffff79e8d30) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#26 0x00007f6be9f246ac in QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x1a89c50, event=0x7ffff79e8d30) at kernel/qcoreapplication.cpp:610
#27 0x00007f6beaaf746c in QWidget::event (this=<value optimized out>, event=0x7ffff79e8d30) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#28 0x00007f6beae8489b in QMainWindow::event (this=0x1b965a0, event=0x7ffff79e8d30) at widgets/qmainwindow.cpp:1399
#29 0x00007f6bebfb7ac8 in KXmlGuiWindow::event (this=0x3, ev=0x0) at /build/buildd/kde4libs-4.3.2/kdeui/xmlgui/kxmlguiwindow.cpp:131
#30 0x00007f6beaaa5f4d in QApplicationPrivate::notify_helper (this=0x1a4f110, receiver=0x1b965a0, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4056
#31 0x00007f6beaaae18a in QApplication::notify (this=0x7ffff79ea9b0, receiver=0x1b965a0, e=0x7ffff79e8d30) at kernel/qapplication.cpp:4021
#32 0x00007f6bebeaaabb in KApplication::notify (this=0x7ffff79ea9b0, receiver=0x1b965a0, event=0x7ffff79e8d30) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#33 0x00007f6be9f246ac in QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x1b965a0, event=0x7ffff79e8d30) at kernel/qcoreapplication.cpp:610
#34 0x00007f6beaaac4e2 in QApplicationPrivate::enterModal (widget=0x5c9d4c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#35 0x00007f6beaafbfd5 in QWidgetPrivate::show_helper (this=0x3ea4440) at kernel/qwidget.cpp:6761
#36 0x00007f6beaafc48a in QWidget::setVisible (this=0x5c9d4c0, visible=<value optimized out>) at kernel/qwidget.cpp:6975
#37 0x00007f6beaf3db7c in QDialog::setVisible (this=0x5c9d4c0, visible=<value optimized out>) at dialogs/qdialog.cpp:706
#38 0x00007f6beaf3cdf5 in QDialog::exec (this=0x5c9d4c0) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:473
#39 0x00007f6bebe30a92 in KMessageBox::createKMessageBox (dialog=0x5c9d4c0, icon=<value optimized out>, text=@0x7ffff79e9950, strlist=@0x7ffff79e9660, ask=@0x7ffff79e9590, checkboxReturn=0x0, 
    options={i = -140602128}, details=@0x7ffff79e9580, notifyType=QMessageBox::Critical) at /build/buildd/kde4libs-4.3.2/kdeui/dialogs/kmessagebox.cpp:331
#40 0x00007f6bebe31c27 in KMessageBox::createKMessageBox (dialog=0x5c9d4c0, icon=QMessageBox::Critical, text=@0x7ffff79e9950, strlist=@0x7ffff79e9660, ask=@0x7ffff79e9590, checkboxReturn=0x0, 
    options={i = -140601872}, details=@0x7ffff79e9580) at /build/buildd/kde4libs-4.3.2/kdeui/dialogs/kmessagebox.cpp:151
#41 0x00007f6bebe32a8c in KMessageBox::errorListWId (parent_id=289723917, text=@0x7ffff79e9950, strlist=@0x7ffff79e9660, caption=@0x7ffff79e96a0, options={i = -140601744})
    at /build/buildd/kde4libs-4.3.2/kdeui/dialogs/kmessagebox.cpp:849
#42 0x00007f6bebe32c58 in KMessageBox::error (parent=<value optimized out>, text=@0x7ffff79e9950, caption=@0x7ffff79e96a0, options=<value optimized out>)
    at /build/buildd/kde4libs-4.3.2/kdeui/dialogs/kmessagebox.cpp:813
#43 0x00007f6bed6b4eee in KABC::GuiErrorHandler::error (this=<value optimized out>, msg=@0x0) at /build/buildd/kdepimlibs-4.3.2/kabc/errorhandler.cpp:76
#44 0x00007f6bed696e54 in KABC::AddressBook::error (this=0x2cb3d80, msg=@0x7ffff79e9950) at /build/buildd/kdepimlibs-4.3.2/kabc/addressbook.cpp:910
#45 0x00007f6bed696f35 in KABC::AddressBook::resourceSavingError (this=0x3, resource=0x2c9f170, errMsg=@0x7f6bea217860) at /build/buildd/kdepimlibs-4.3.2/kabc/addressbook.cpp:967
#46 0x00007f6bed69703b in KABC::AddressBook::qt_metacall (this=0x2cb3d80, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffff79e9850)
    at /build/buildd/kdepimlibs-4.3.2/obj-x86_64-linux-gnu/kabc/addressbook.moc:93
#47 0x00007f6be9f39ea2 in QMetaObject::activate (sender=0x2c9f170, from_signal_index=<value optimized out>, to_signal_index=7, argv=0x21b7ad0) at kernel/qobject.cpp:3113
#48 0x00007f6bed6bc167 in KABC::Resource::savingError (this=0x3, _t1=0x2c9f170, _t2=<value optimized out>) at /build/buildd/kdepimlibs-4.3.2/obj-x86_64-linux-gnu/kabc/resource.moc:111
#49 0x00007f6bce830a42 in ?? () from /usr/lib/kde4/kabc_akonadi.so
#50 0x00007f6bce84e570 in ?? () from /usr/lib/kde4/kabc_akonadi.so
#51 0x00007f6bce82e563 in ?? () from /usr/lib/kde4/kabc_akonadi.so
#52 0x00007f6bed696a9a in KABC::AddressBook::save (this=<value optimized out>, ticket=0x51e3c30) at /build/buildd/kdepimlibs-4.3.2/kabc/addressbook.cpp:390
#53 0x00007f6bed6c41d5 in KABC::StdAddressBook::Private::saveAll (this=0x2c9f1f0) at /build/buildd/kdepimlibs-4.3.2/kabc/stdaddressbook.cpp:204
#54 0x00007f6bed6c4429 in ~StdAddressBook (this=0x2cb3d80) at /build/buildd/kdepimlibs-4.3.2/kabc/stdaddressbook.cpp:138
#55 0x00007f6bed6c36e6 in KABC::StdAddressBook::close () at /build/buildd/kdepimlibs-4.3.2/kabc/stdaddressbook.cpp:227
#56 0x00007f6bd9275630 in KABCore::~KABCore () from /usr/lib/libkaddressbookprivate.so.4
#57 0x00007f6be9f32ec1 in QObjectPrivate::deleteChildren (this=0x4561080) at kernel/qobject.cpp:1847
#58 0x00007f6beaaf21a2 in ~QWidget (this=0x434d9b0) at kernel/qwidget.cpp:1367
#59 0x00007f6bec78009b in ~Part (this=0x5088fa0, __vtt_parm=0x7f6bc554f510) at /build/buildd/kde4libs-4.3.2/kparts/part.cpp:208
#60 0x00007f6bc534c66b in ?? () from /usr/lib/kde4/kaddressbookpart.so
#61 0x00007f6bee73d12e in Kontact::Plugin::~Plugin () from /usr/lib/libkontactinterfaces.so.4
#62 0x00007f6bd7cb0d45 in ?? () from /usr/lib/kde4/kontact_kaddressbookplugin.so
#63 0x00007f6bee95ed2e in Kontact::MainWindow::~MainWindow () from /usr/lib/libkontactprivate.so.4
#64 0x00007f6be9f345f5 in QObject::event (this=0x1b965a0, e=0x0) at kernel/qobject.cpp:1094
#65 0x00007f6beaaf68ed in QWidget::event (this=0x1b965a0, event=0x434cb80) at kernel/qwidget.cpp:7946
#66 0x00007f6beae8489b in QMainWindow::event (this=0x1b965a0, event=0x434cb80) at widgets/qmainwindow.cpp:1399
#67 0x00007f6bebfb7ac8 in KXmlGuiWindow::event (this=0x3, ev=0x0) at /build/buildd/kde4libs-4.3.2/kdeui/xmlgui/kxmlguiwindow.cpp:131
#68 0x00007f6beaaa5f4d in QApplicationPrivate::notify_helper (this=0x1a4f110, receiver=0x1b965a0, e=0x434cb80) at kernel/qapplication.cpp:4056
#69 0x00007f6beaaae18a in QApplication::notify (this=0x7ffff79ea9b0, receiver=0x1b965a0, e=0x434cb80) at kernel/qapplication.cpp:4021
#70 0x00007f6bebeaaabb in KApplication::notify (this=0x7ffff79ea9b0, receiver=0x1b965a0, event=0x434cb80) at /build/buildd/kde4libs-4.3.2/kdeui/kernel/kapplication.cpp:302
#71 0x00007f6be9f246ac in QCoreApplication::notifyInternal (this=0x7ffff79ea9b0, receiver=0x1b965a0, event=0x434cb80) at kernel/qcoreapplication.cpp:610
#72 0x00007f6be9f2531a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1a12100) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#73 0x00007f6be9f4de03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#74 0x00007f6be367520a in IA__g_main_context_dispatch (context=0x1a40a50) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#75 0x00007f6be36788e0 in g_main_context_iterate (context=0x1a40a50, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#76 0x00007f6be3678a7c in IA__g_main_context_iteration (context=0x1a40a50, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#77 0x00007f6be9f4da8f in QEventDispatcherGlib::processEvents (this=0x1a33830, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#78 0x00007f6beab3ebdf in QGuiEventDispatcherGlib::processEvents (this=0x3, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#79 0x00007f6be9f22f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -140597040}) at kernel/qeventloop.cpp:149
#80 0x00007f6be9f23314 in QEventLoop::exec (this=0x7ffff79ea910, flags={i = -140596960}) at kernel/qeventloop.cpp:201
#81 0x00007f6be9f255e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#82 0x0000000000404945 in _start ()

Reported using DrKonqi