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 x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
1. Shutdown Kontact
2. Installed libgcal from source
3. Installed akonadi-googledata-1.0 from source
4. restarted akondi using akonadictl restart
5. Started Kontact
6. Crash!

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 0 (LWP 22252)]

Thread 2 (Thread 0x7f2c6dbb0950 (LWP 22548)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f2c8ad13d19 in QWaitCondition::wait (this=0x39c6e10, mutex=0x39c6e08, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f2c8c68081c in QHostInfoAgent::run (this=0x39c6df0) at kernel/qhostinfo.cpp:260
#3  0x00007f2c8ad12d35 in QThreadPrivate::start (arg=0x39c6df0) at thread/qthread_unix.cpp:188
#4  0x00007f2c875ec3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007f2c8a27dfcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2c9086c750 (LWP 22252)):
[KCrash Handler]
#5  Kontact::MainWindow::activatePluginModule (this=0x1a94360) at /build/buildd/kdepim-4.3.0/kontact/src/mainwindow.cpp:303
#6  0x00000000004036a2 in KontactApp::newInstance (this=0x7fff988b6a70) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:147
#7  0x00007f2c8cd86656 in KUniqueApplicationAdaptor::newInstance (this=0x1ab26f0, asn_id=<value optimized out>, args=@0x3670450)
    at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kuniqueapplication.cpp:459
#8  0x00007f2c8cd866e2 in KUniqueApplicationAdaptor::qt_metacall (this=0x1ab26f0, _c=QMetaObject::InvokeMetaMethod, _id=-1735698545, _a=0x7fff988b5d10)
    at /build/buildd/kde4libs-4.3.0/obj-x86_64-linux-gnu/kdeui/kuniqueapplication_p.moc:75
#9  0x00007f2c8b116453 in QDBusConnectionPrivate::deliverCall (this=0x19977c0, object=0x1ab26f0, msg=@0x3d15940, metaTypes=@0x1a403e0, slotIdx=4) at qdbusintegrator.cpp:891
#10 0x00007f2c8b117778 in QDBusConnectionPrivate::activateCall (this=0x19977c0, object=0x1ab26f0, flags=337, msg=@0x3d15940) at qdbusintegrator.cpp:803
#11 0x00007f2c8b117da1 in QDBusConnectionPrivate::activateObject (this=0x19977c0, node=@0x3d15918, msg=@0x3d15940, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1347
#12 0x00007f2c8b1180b8 in QDBusActivateObjectEvent::placeMetaCall (this=0x3d158d0) at qdbusintegrator.cpp:1464
#13 0x00007f2c8ae0c5d8 in QObject::event (this=0x7fff988b6a70, e=0x3d158d0) at kernel/qobject.cpp:1111
#14 0x00007f2c8b9806ca in QApplication::event (this=0x7fff988b6a70, e=0x3d158d0) at kernel/qapplication.cpp:2317
#15 0x00007f2c8b97af4d in QApplicationPrivate::notify_helper (this=0x19a2f60, receiver=0x7fff988b6a70, e=0x3d158d0) at kernel/qapplication.cpp:4056
#16 0x00007f2c8b98318a in QApplication::notify (this=0x7fff988b6a70, receiver=0x7fff988b6a70, e=0x3d158d0) at kernel/qapplication.cpp:4021
#17 0x00007f2c8cd7f71b in KApplication::notify (this=0x7fff988b6a70, receiver=0x7fff988b6a70, event=0x3d158d0) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#18 0x00007f2c8adfc6ac in QCoreApplication::notifyInternal (this=0x7fff988b6a70, receiver=0x7fff988b6a70, event=0x3d158d0) at kernel/qcoreapplication.cpp:610
#19 0x00007f2c8adfd31a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x197a850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#20 0x00007f2c8ae25e03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#21 0x00007f2c8454d20a in IA__g_main_context_dispatch (context=0x19a50c0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#22 0x00007f2c845508e0 in g_main_context_iterate (context=0x19a50c0, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#23 0x00007f2c84550a7c in IA__g_main_context_iteration (context=0x19a50c0, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#24 0x00007f2c8ae25a8f in QEventDispatcherGlib::processEvents (this=0x197a0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#25 0x00007f2c8ba13bdf in QGuiEventDispatcherGlib::processEvents (this=0x1a94360, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x00007f2c8adfaf42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1735693936}) at kernel/qeventloop.cpp:149
#27 0x00007f2c8adfb314 in QEventLoop::exec (this=0x7fff988b69d0, flags={i = -1735693856}) at kernel/qeventloop.cpp:201
#28 0x00007f2c8adfd5e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0x0000000000404945 in main (argc=1, argv=0x7fff988b7158) at /build/buildd/kdepim-4.3.0/kontact/src/main.cpp:218

Reported using DrKonqi