Application that crashed: kontact
Version of the application: 4.3.4
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-16-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
error to open kontact

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  Kontact::MainWindow::activatePluginModule (this=0x904e30) at ../../../kontact/src/mainwindow.cpp:303
#6  0x0000000000404772 in KontactApp::newInstance (this=0x7fff6169d870) at ../../../kontact/src/main.cpp:147
#7  0x00007ff974f54cb6 in KUniqueApplicationAdaptor::newInstance (this=0x922520, asn_id=<value optimized out>, args=...) at ../../kdeui/kernel/kuniqueapplication.cpp:459
#8  0x00007ff974f552a6 in KUniqueApplicationAdaptor::qt_metacall (this=0x922520, _c=QMetaObject::InvokeMetaMethod, _id=12662528, _a=0x7fff6169cba0) at ./kuniqueapplication_p.moc:75
#9  0x00007ff971b22ad4 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:891
#10 0x00007ff971b23cc3 in QDBusConnectionPrivate::activateCall (this=<value optimized out>, object=0x922520, flags=337, msg=...) at qdbusintegrator.cpp:803
#11 0x00007ff971b24547 in QDBusConnectionPrivate::activateObject (this=<value optimized out>, node=..., msg=<value optimized out>, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1347
#12 0x00007ff971b247c8 in QDBusActivateObjectEvent::placeMetaCall (this=0x1903910) at qdbusintegrator.cpp:1464
#13 0x00007ff973a020f9 in QObject::event (this=0x7fff6169d870, e=0x1903910) at kernel/qobject.cpp:1111
#14 0x00007ff974320b4d in QApplication::event (this=0x7fff6169d870, e=0x1903910) at kernel/qapplication.cpp:2317
#15 0x00007ff974316efc in QApplicationPrivate::notify_helper (this=0x86e970, receiver=0x7fff6169d870, e=0x1903910) at kernel/qapplication.cpp:4056
#16 0x00007ff97431e1ce in QApplication::notify (this=0x7fff6169d870, receiver=0x7fff6169d870, e=0x1903910) at kernel/qapplication.cpp:4021
#17 0x00007ff974f4de56 in KApplication::notify (this=0x7fff6169d870, receiver=0x7fff6169d870, event=0x1903910) at ../../kdeui/kernel/kapplication.cpp:302
#18 0x00007ff9739f2c2c in QCoreApplication::notifyInternal (this=0x7fff6169d870, receiver=0x7fff6169d870, event=0x1903910) at kernel/qcoreapplication.cpp:610
#19 0x00007ff9739f380a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x833080) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x833080) at kernel/qcoreapplication.cpp:1247
#21 0x00007ff973a1b533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#22 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#23 0x00007ff96d26cbbe in g_main_dispatch (context=0x85d400) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:1960
#24 IA__g_main_context_dispatch (context=0x85d400) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2513
#25 0x00007ff96d270588 in g_main_context_iterate (context=0x85d400, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>)
    at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2591
#26 0x00007ff96d2706b0 in IA__g_main_context_iteration (context=0x85d400, may_block=1) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2654
#27 0x00007ff973a1b1a6 in QEventDispatcherGlib::processEvents (this=0x832cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#28 0x00007ff9743ab4be in QGuiEventDispatcherGlib::processEvents (this=0x904e30, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#29 0x00007ff9739f1532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#30 0x00007ff9739f1904 in QEventLoop::exec (this=0x7fff6169d7b0, flags=) at kernel/qeventloop.cpp:201
#31 0x00007ff9739f3ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#32 0x0000000000403f47 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kontact/src/main.cpp:218

Reported using DrKonqi