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 2.6.28-14-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Happens when I close kontact and start it again

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xb780802c in Kontact::Plugin::identifier (this=0x9536888) at /usr/include/qt4/QtCore/qstring.h:711
#7  0xb7821ff9 in Kontact::MainWindow::activatePluginModule (this=0x924e368) at /build/buildd/kdepim-4.3.0/kontact/src/mainwindow.cpp:303
#8  0xb78220a4 in Kontact::MainWindow::setActivePluginModule (this=0x924e368, module=@0xbfe97a04) at /build/buildd/kdepim-4.3.0/kontact/src/mainwindow.cpp:281
#9  0x0804ac57 in KontactApp::newInstance (this=0xbfe98568) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:147
#10 0xb6cbfc36 in KUniqueApplicationAdaptor::newInstance (this=0x92afc98, asn_id=@0xa27b6c8, args=@0xa0cc980) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kuniqueapplication.cpp:459
#11 0xb6cbfcde in KUniqueApplicationAdaptor::qt_metacall (this=0x92afc98, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfe97c58)
    at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kuniqueapplication_p.moc:75
#12 0xb5d15e5a in QDBusConnectionPrivate::deliverCall (this=0x9232f40, object=0x92afc98, msg=@0xa30bc88, metaTypes=@0xa0d5504, slotIdx=4) at qdbusintegrator.cpp:891
#13 0xb5d17179 in QDBusConnectionPrivate::activateCall (this=0x9232f40, object=0x92afc98, flags=337, msg=@0xa30bc88) at qdbusintegrator.cpp:803
#14 0xb5d175e1 in QDBusConnectionPrivate::activateObject (this=0x9232f40, node=@0xa30bc74, msg=@0xa30bc88, pathStartPos=16) at qdbusintegrator.cpp:1370
#15 0xb5d17ada in QDBusActivateObjectEvent::placeMetaCall (this=0xa30bc48) at qdbusintegrator.cpp:1464
#16 0xb5c0e3b0 in QObject::event (this=0xbfe98568, e=0xa30bc48) at kernel/qobject.cpp:1111
#17 0xb5bfd56b in QCoreApplication::event (this=0xbfe98568, e=0xa30bc48) at kernel/qcoreapplication.cpp:1434
#18 0xb60c4679 in QApplication::event (this=0xbfe98568, e=0xa30bc48) at kernel/qapplication.cpp:2317
#19 0xb60bed3c in QApplicationPrivate::notify_helper (this=0x923f028, receiver=0xbfe98568, e=0xa30bc48) at kernel/qapplication.cpp:4056
#20 0xb60c703e in QApplication::notify (this=0xbfe98568, receiver=0xbfe98568, e=0xa30bc48) at kernel/qapplication.cpp:3603
#21 0xb6cb85cd in KApplication::notify (this=0xbfe98568, receiver=0xbfe98568, event=0xa30bc48) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#22 0xb5bfdbcb in QCoreApplication::notifyInternal (this=0xbfe98568, receiver=0xbfe98568, event=0xa30bc48) at kernel/qcoreapplication.cpp:610
#23 0xb5bfe825 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x921b440) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#24 0xb5bfea1d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#25 0xb5c296af in postEventSourceDispatch (s=0x92410a8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#26 0xb4ccfb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#27 0xb4cd30eb in ?? () from /usr/lib/libglib-2.0.so.0
#28 0xb4cd3268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#29 0xb5c292f8 in QEventDispatcherGlib::processEvents (this=0x921b028, flags={i = -1075215304}) at kernel/qeventdispatcher_glib.cpp:327
#30 0xb6160a75 in QGuiEventDispatcherGlib::processEvents (this=0x921b028, flags={i = -1075215256}) at kernel/qguieventdispatcher_glib.cpp:202
#31 0xb5bfc1fa in QEventLoop::processEvents (this=0xbfe984e0, flags={i = -1075215192}) at kernel/qeventloop.cpp:149
#32 0xb5bfc642 in QEventLoop::exec (this=0xbfe984e0, flags={i = -1075215128}) at kernel/qeventloop.cpp:201
#33 0xb5bfeae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#34 0xb60bebb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#35 0x0804bfef in main (argc=1, argv=0xbfe98864) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:218

Reported using DrKonqi