Application that crashed: kontact
Version of the application: 4.3.3
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Oh well, same Problem with 4.3.3

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0x004b41fc in QString (this=0x8806e98) at /usr/include/qt4/QtCore/qstring.h:711
#7  Kontact::Plugin::identifier (this=0x8806e98) at ../../kontactinterfaces/plugin.cpp:97
#8  0x00c6450e in Kontact::MainWindow::activatePluginModule (this=0x8587430) at ../../../kontact/src/mainwindow.cpp:303
#9  0x00c645c4 in Kontact::MainWindow::setActivePluginModule (this=0x8587430, module=...) at ../../../kontact/src/mainwindow.cpp:281
#10 0x0804bd0f in KontactApp::newInstance (this=0xbfb5c364) at ../../../kontact/src/main.cpp:147
#11 0x002ea8d0 in KUniqueApplicationAdaptor::newInstance (this=0x865bf28, asn_id=..., args=...) at ../../kdeui/kernel/kuniqueapplication.cpp:459
#12 0x002eafe2 in KUniqueApplicationAdaptor::qt_metacall (this=0x865bf28, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfb5b98c) at ./kuniqueapplication_p.moc:75
#13 0x00ba77b4 in QDBusConnectionPrivate::deliverCall (this=0x856ac90, object=0x865bf28, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:891
#14 0x00ba89c5 in QDBusConnectionPrivate::activateCall (this=0x856ac90, object=0x865bf28, flags=337, msg=...) at qdbusintegrator.cpp:803
#15 0x00ba9234 in QDBusConnectionPrivate::activateObject (this=0x856ac90, node=..., msg=..., pathStartPos=16) at qdbusintegrator.cpp:1347
#16 0x00ba94da in QDBusActivateObjectEvent::placeMetaCall (this=0x943b618) at qdbusintegrator.cpp:1464
#17 0x02eb85fe in QObject::event (this=0xbfb5c364, e=0x943b618) at kernel/qobject.cpp:1111
#18 0x02ea7ffb in QCoreApplication::event (this=0xbfb5c364, e=0x943b618) at kernel/qcoreapplication.cpp:1434
#19 0x00da39a6 in QApplication::event (this=0xbfb5c364, e=0x943b618) at kernel/qapplication.cpp:2317
#20 0x00d9df54 in QApplicationPrivate::notify_helper (this=0x8572938, receiver=0xbfb5c364, e=0x943b618) at kernel/qapplication.cpp:4056
#21 0x00da567c in QApplication::notify (this=0xbfb5c364, receiver=0xbfb5c364, e=0x943b618) at kernel/qapplication.cpp:3603
#22 0x002e314a in KApplication::notify (this=0xbfb5c364, receiver=0xbfb5c364, event=0x943b618) at ../../kdeui/kernel/kapplication.cpp:302
#23 0x02ea86cb in QCoreApplication::notifyInternal (this=0xbfb5c364, receiver=0xbfb5c364, event=0x943b618) at kernel/qcoreapplication.cpp:610
#24 0x02ea92b2 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8552820) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8552820) at kernel/qcoreapplication.cpp:1247
#26 0x02ea947d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#27 0x02ed33ff in QCoreApplication::sendPostedEvents (s=0x8583f18) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#28 postEventSourceDispatch (s=0x8583f18) at kernel/qeventdispatcher_glib.cpp:210
#29 0x03478e78 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x0347c720 in ?? () from /lib/libglib-2.0.so.0
#31 0x0347c853 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x02ed302c in QEventDispatcherGlib::processEvents (this=0x85529f8, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#33 0x00e3ebe5 in QGuiEventDispatcherGlib::processEvents (this=0x85529f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#34 0x02ea6c79 in QEventLoop::processEvents (this=0xbfb5c2c4, flags=) at kernel/qeventloop.cpp:149
#35 0x02ea70ca in QEventLoop::exec (this=0xbfb5c2c4, flags=...) at kernel/qeventloop.cpp:201
#36 0x02ea953f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#37 0x00d9ddd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#38 0x0804b4e6 in main (argc=1, argv=0xbfb5c584) at ../../../kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 212937

Reported using DrKonqi