Application that crashed: kontact
Version of the application: 4.3.0 pre
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-11-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Kontact crashes directly during startup and before showing any windows. This happens roughly every third time.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  Kontact::MainWindow::activatePluginModule (this=0x18967d0) at /build/buildd/kdepim-4.2.90/kontact/src/mainwindow.cpp:300
#6  0x00000000004036a2 in KontactApp::newInstance (this=0x7fffc13c05c0) at /build/buildd/kdepim-4.2.90/kontact/src/main.cpp:147
#7  0x00007f2db587afa6 in KUniqueApplicationAdaptor::newInstance (this=0x19421e0, asn_id=<value optimized out>, args=@0x1e5b9b0)
    at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kuniqueapplication.cpp:454
#8  0x00007f2db587b032 in KUniqueApplicationAdaptor::qt_metacall (this=0x19421e0, _c=QMetaObject::InvokeMetaMethod, _id=-1053035809, _a=0x7fffc13bf860)
    at /build/buildd/kde4libs-4.2.90/obj-x86_64-linux-gnu/kdeui/kuniqueapplication_p.moc:75
#9  0x00007f2db3ba2f83 in QDBusConnectionPrivate::deliverCall (this=0x1870070, object=0x19421e0, msg=@0x2050ed0, metaTypes=@0x1949a70, slotIdx=4) at qdbusintegrator.cpp:891
#10 0x00007f2db3ba42a8 in QDBusConnectionPrivate::activateCall (this=0x1870070, object=0x19421e0, flags=337, msg=@0x2050ed0) at qdbusintegrator.cpp:803
#11 0x00007f2db3ba48d1 in QDBusConnectionPrivate::activateObject (this=0x1870070, node=@0x2050ea8, msg=@0x2050ed0, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1352
#12 0x00007f2db3ba4be8 in QDBusActivateObjectEvent::placeMetaCall (this=0x2050e60) at qdbusintegrator.cpp:1469
#13 0x00007f2db3894848 in QObject::event (this=0x7fffc13c05c0, e=0x2050e60) at kernel/qobject.cpp:1118
#14 0x00007f2db443fb9a in QApplication::event (this=0x7fffc13c05c0, e=0x2050e60) at kernel/qapplication.cpp:2334
#15 0x00007f2db443c78d in QApplicationPrivate::notify_helper (this=0x1889d10, receiver=0x7fffc13c05c0, e=0x2050e60) at kernel/qapplication.cpp:4084
#16 0x00007f2db444497a in QApplication::notify (this=0x7fffc13c05c0, receiver=0x7fffc13c05c0, e=0x2050e60) at kernel/qapplication.cpp:4049
#17 0x00007f2db587406b in KApplication::notify (this=0x7fffc13c05c0, receiver=0x7fffc13c05c0, event=0x2050e60) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#18 0x00007f2db388475c in QCoreApplication::notifyInternal (this=0x7fffc13c05c0, receiver=0x7fffc13c05c0, event=0x2050e60) at kernel/qcoreapplication.cpp:602
#19 0x00007f2db38853ca in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x1852690) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0x00007f2db38ae1e3 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#21 0x00007f2dacfbb20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#22 0x00007f2dacfbe8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#23 0x00007f2dacfbea7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#24 0x00007f2db38ade6f in QEventDispatcherGlib::processEvents (this=0x1851ea0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#25 0x00007f2db44d4bef in QGuiEventDispatcherGlib::processEvents (this=0x18967d0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x00007f2db3883002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1053031200}) at kernel/qeventloop.cpp:149
#27 0x00007f2db38833cd in QEventLoop::exec (this=0x7fffc13c0520, flags={i = -1053031120}) at kernel/qeventloop.cpp:200
#28 0x00007f2db3885694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#29 0x0000000000404945 in main (argc=1, argv=0x7fffc13c0ca8) at /build/buildd/kdepim-4.2.90/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 196026

Reported using DrKonqi