Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic-pae i686
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I use Kubuntu Lucid Beta 2.
I removed duplicated address book "Personal Contacts" (I had three of them in list) and then I tried to configure address book (using rigth-click in the first field). Suddenly Kontact crashed and I had to kill it from system monitor.
Hope backtrace would be helpful.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0xb3743990 (LWP 1985))]

Thread 2 (Thread 0xaed39b70 (LWP 1997)):
#0  0xb4301e16 in clock_gettime () from /lib/tls/i686/cmov/librt.so.1
#1  0xb6e166fb in qt_gettime () at kernel/qcore_unix.cpp:111
#2  0xb6e1b825 in QTimerInfoList::updateCurrentTime (this=0xa025b1c) at kernel/qeventdispatcher_unix.cpp:340
#3  0xb6e1b86a in QTimerInfoList::timerWait (this=0xa025b1c, tm=...) at kernel/qeventdispatcher_unix.cpp:443
#4  0xb6e19818 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xaed390ac) at kernel/qeventdispatcher_glib.cpp:136
#5  0xb6e198a5 in timerSourcePrepare (source=0x0, timeout=0xb4305ff4) at kernel/qeventdispatcher_glib.cpp:169
#6  0xb4272aca in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0xb4272ee9 in ?? () from /lib/libglib-2.0.so.0
#8  0xb42734b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0xb6e1960f in QEventDispatcherGlib::processEvents (this=0xa025b80, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#10 0xb6dec059 in QEventLoop::processEvents (this=0xaed39270, flags=) at kernel/qeventloop.cpp:149
#11 0xb6dec4aa in QEventLoop::exec (this=0xaed39270, flags=...) at kernel/qeventloop.cpp:201
#12 0xb6ce85a8 in QThread::exec (this=0xa01fa20) at thread/qthread.cpp:487
#13 0xb6dcbc1b in QInotifyFileSystemWatcherEngine::run (this=0xa01fa20) at io/qfilesystemwatcher_inotify.cpp:248
#14 0xb6ceb32e in QThreadPrivate::start (arg=0xa01fa20) at thread/qthread_unix.cpp:248
#15 0xb456096e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#16 0xb6075a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb3743990 (LWP 1985)):
[KCrash Handler]
#6  QModelIndex (this=0xa24ab60, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf8cdc18) at /usr/include/qt4/QtCore/qabstractitemmodel.h:65
#7  Akonadi::StandardContactActionManager::Private::configureAddressBookTriggered (this=0xa24ab60, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf8cdc18)
    at ../../kaddressbook/standardcontactactionmanager.cpp:225
#8  Akonadi::StandardContactActionManager::qt_metacall (this=0xa24ab60, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbf8cdc18) at ./standardcontactactionmanager.moc:94
#9  0xb6df2c9a in QMetaObject::metacall (object=0xa24ab60, cl=3054498752, idx=11, argv=0xbf8cdc18) at kernel/qmetaobject.cpp:237
#10 0xb6e013d5 in QMetaObject::activate (sender=0xa2549d0, m=0xb6c65d58, local_signal_index=1, argv=0xbf8cdc18) at kernel/qobject.cpp:3293
#11 0xb6336bd9 in QAction::triggered (this=0xa2549d0, _t1=false) at .moc/release-shared/moc_qaction.cpp:263
#12 0xb6338dcc in QAction::activate (this=0xa2549d0, event=QAction::Trigger) at kernel/qaction.cpp:1255
#13 0xb67dc60c in QMenuPrivate::activateCausedStack (this=0x9ef1d28, causedStack=..., action=0xa2549d0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1011
#14 0xb67e2abb in QMenuPrivate::activateAction (this=0x9ef1d28, action=0xa2549d0, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1103
#15 0xb67e3ac7 in QMenu::mouseReleaseEvent (this=0x9f1bee0, e=0xbf8ce4b0) at widgets/qmenu.cpp:2312
#16 0xb7434f65 in KMenu::mouseReleaseEvent (this=0x9f1bee0, e=0xbf8ce4b0) at ../../kdeui/widgets/kmenu.cpp:471
#17 0xb639b7f8 in QWidget::event (this=0x9f1bee0, event=0xbf8ce4b0) at kernel/qwidget.cpp:7998
#18 0xb67e50cc in QMenu::event (this=0x9f1bee0, e=0xbf8ce4b0) at widgets/qmenu.cpp:2414
#19 0xb633d4dc in QApplicationPrivate::notify_helper (this=0x98af1a0, receiver=0x9f1bee0, e=0xbf8ce4b0) at kernel/qapplication.cpp:4300
#20 0xb63449f7 in QApplication::notify (this=0xbf8cfec4, receiver=0x9f1bee0, e=0xbf8ce4b0) at kernel/qapplication.cpp:3865
#21 0xb733ef2a in KApplication::notify (this=0xbf8cfec4, receiver=0x9f1bee0, event=0xbf8ce4b0) at ../../kdeui/kernel/kapplication.cpp:302
#22 0xb6deda3b in QCoreApplication::notifyInternal (this=0xbf8cfec4, receiver=0x9f1bee0, event=0xbf8ce4b0) at kernel/qcoreapplication.cpp:704
#23 0xb6343952 in QCoreApplication::sendEvent (receiver=0x9f1bee0, event=0xbf8ce4b0, alienWidget=0x0, nativeWidget=0x9f1bee0, buttonDown=0xb6c81058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QApplicationPrivate::sendMouseEvent (receiver=0x9f1bee0, event=0xbf8ce4b0, alienWidget=0x0, nativeWidget=0x9f1bee0, buttonDown=0xb6c81058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#25 0xb63cf5cf in QETWidget::translateMouseEvent (this=0x9f1bee0, event=0xbf8ce9cc) at kernel/qapplication_x11.cpp:4302
#26 0xb63ce511 in QApplication::x11ProcessEvent (this=0xbf8cfec4, event=0xbf8ce9cc) at kernel/qapplication_x11.cpp:3379
#27 0xb63fd60a in x11EventSourceDispatch (s=0x98b29e8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#28 0xb426f5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0xb42732d8 in ?? () from /lib/libglib-2.0.so.0
#30 0xb42734b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0xb6e195d5 in QEventDispatcherGlib::processEvents (this=0x988e070, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#32 0xb63fd135 in QGuiEventDispatcherGlib::processEvents (this=0x988e070, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#33 0xb6dec059 in QEventLoop::processEvents (this=0xbf8cecc0, flags=) at kernel/qeventloop.cpp:149
#34 0xb6dec4aa in QEventLoop::exec (this=0xbf8cecc0, flags=...) at kernel/qeventloop.cpp:201
#35 0xb67dfdde in QMenu::exec (this=0x9f1bee0, p=..., action=0x0) at widgets/qmenu.cpp:2063
#36 0xb75d44e7 in Akonadi::EntityTreeView::contextMenuEvent (this=0xa1f82a0, event=0xbf8cf638) at ../../akonadi/entitytreeview.cpp:254
#37 0xb639bf38 in QWidget::event (this=0xa1f82a0, event=0xbf8cf638) at kernel/qwidget.cpp:8165
#38 0xb6797fd3 in QFrame::event (this=0xa1f82a0, e=0xbf8cf638) at widgets/qframe.cpp:557
#39 0xb6832382 in QAbstractScrollArea::viewportEvent (this=0xb60ff3c0, e=0x0) at widgets/qabstractscrollarea.cpp:1036
#40 0xb68e6bd7 in QAbstractItemView::viewportEvent (this=0xa1f82a0, event=0xbf8cf638) at itemviews/qabstractitemview.cpp:1610
#41 0xb6927f7c in QTreeView::viewportEvent (this=0xa1f82a0, event=0xbf8cf638) at itemviews/qtreeview.cpp:1248
#42 0xb6834c65 in QAbstractScrollAreaPrivate::viewportEvent (this=0x9fb6f18, o=0xa1ff628, e=0xbf8cf638) at widgets/qabstractscrollarea_p.h:100
#43 QAbstractScrollAreaFilter::eventFilter (this=0x9fb6f18, o=0xa1ff628, e=0xbf8cf638) at widgets/qabstractscrollarea_p.h:116
#44 0xb6deccda in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x98af1a0, receiver=0xa1ff628, event=0xbf8cf638) at kernel/qcoreapplication.cpp:819
#45 0xb633d4b9 in QApplicationPrivate::notify_helper (this=0x98af1a0, receiver=0xa1ff628, e=0xbf8cf638) at kernel/qapplication.cpp:4296
#46 0xb6344470 in QApplication::notify (this=0xbf8cfec4, receiver=0xa1ff628, e=0xbf8cf638) at kernel/qapplication.cpp:3944
#47 0xb733ef2a in KApplication::notify (this=0xbf8cfec4, receiver=0xa1ff628, event=0xbf8cf638) at ../../kdeui/kernel/kapplication.cpp:302
#48 0xb6deda3b in QCoreApplication::notifyInternal (this=0xbf8cfec4, receiver=0xa1ff628, event=0xbf8cf638) at kernel/qcoreapplication.cpp:704
#49 0xb63d4dfe in QCoreApplication::sendSpontaneousEvent (receiver=0xa1ff628, event=0x0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#50 0xb63cf0f4 in QETWidget::translateMouseEvent (this=0x99b57d0, event=0xbf8cfb2c) at kernel/qapplication_x11.cpp:4373
#51 0xb63ce511 in QApplication::x11ProcessEvent (this=0xbf8cfec4, event=0xbf8cfb2c) at kernel/qapplication_x11.cpp:3379
#52 0xb63fd60a in x11EventSourceDispatch (s=0x98b29e8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#53 0xb426f5e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#54 0xb42732d8 in ?? () from /lib/libglib-2.0.so.0
#55 0xb42734b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#56 0xb6e195d5 in QEventDispatcherGlib::processEvents (this=0x988e070, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#57 0xb63fd135 in QGuiEventDispatcherGlib::processEvents (this=0x988e070, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#58 0xb6dec059 in QEventLoop::processEvents (this=0xbf8cfe24, flags=) at kernel/qeventloop.cpp:149
#59 0xb6dec4aa in QEventLoop::exec (this=0xbf8cfe24, flags=...) at kernel/qeventloop.cpp:201
#60 0xb6df069f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#61 0xb633d577 in QApplication::exec () at kernel/qapplication.cpp:3579
#62 0x0804b472 in main (argc=1, argv=0xbf8d00e4) at ../../../kontact/src/main.cpp:224

Reported using DrKonqi