Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.35-020635rc6-generic i686
Distribution: Ubuntu 10.04.1 LTS

-- Information about the crash:
I'm facing the same issue described into ticket #246918 (here proposed as "duplicated").
If useful, before this crash, I added an event into korganizer, which causes an akonadi error.
Furthermore, before this crash again, I added "Message Indicator" plasmoid to "system tray" plasma object.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0xb373a990 (LWP 1979))]

Thread 2 (Thread 0xad874b70 (LWP 2037)):
#0  0xb4269647 in g_main_context_check () from /lib/libglib-2.0.so.0
#1  0xb426a0ce in ?? () from /lib/libglib-2.0.so.0
#2  0xb426a4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0xb6e1760f in QEventDispatcherGlib::processEvents (this=0x91e28f0, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#4  0xb6dea059 in QEventLoop::processEvents (this=0xad874270, flags=) at kernel/qeventloop.cpp:149
#5  0xb6dea4aa in QEventLoop::exec (this=0xad874270, flags=...) at kernel/qeventloop.cpp:201
#6  0xb6ce65a8 in QThread::exec (this=0x9865000) at thread/qthread.cpp:487
#7  0xb6dc9c1b in QInotifyFileSystemWatcherEngine::run (this=0x9865000) at io/qfilesystemwatcher_inotify.cpp:248
#8  0xb6ce932e in QThreadPrivate::start (arg=0x9865000) at thread/qthread_unix.cpp:248
#9  0xb455796e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0xb606ca4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb373a990 (LWP 1979)):
[KCrash Handler]
#6  0xb76d028c in QString (this=0x9566468) at /usr/include/qt4/QtCore/qstring.h:714
#7  KontactInterface::Plugin::identifier (this=0x9566468) at ../../kontactinterface/plugin.cpp:101
#8  0xb785ceae in Kontact::MainWindow::activateInitialPluginModule (this=0x91e3d00) at ../../../kontact/src/mainwindow.cpp:289
#9  0xb785cf64 in Kontact::MainWindow::setInitialActivePluginModule (this=0x91e3d00, module=...) at ../../../kontact/src/mainwindow.cpp:266
#10 0x0804bd1f in KontactApp::newInstance (this=0xbfba01a4) at ../../../kontact/src/main.cpp:149
#11 0xb7344950 in KUniqueApplicationAdaptor::newInstance (this=0x9277748, asn_id=..., args=...) at ../../kdeui/kernel/kuniqueapplication.cpp:454
#12 0xb73450b2 in KUniqueApplicationAdaptor::qt_metacall (this=0x9277748, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfb9f6fc) at ./kuniqueapplication_p.moc:81
#13 0xb55cdb34 in QDBusConnectionPrivate::deliverCall (this=0x91d82d8, object=0x9277748, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:904
#14 0xb55cee45 in QDBusConnectionPrivate::activateCall (this=0x91d82d8, object=0x9277748, flags=337, msg=...) at qdbusintegrator.cpp:816
#15 0xb55cf880 in QDBusConnectionPrivate::activateObject (this=0x91d82d8, node=..., msg=..., pathStartPos=16) at qdbusintegrator.cpp:1364
#16 0xb55cfb1a in QDBusActivateObjectEvent::placeMetaCall (this=0x9630518) at qdbusintegrator.cpp:1477
#17 0xb6dfc3fe in QObject::event (this=0xbfba01a4, e=0x9630518) at kernel/qobject.cpp:1248
#18 0xb6deb50b in QCoreApplication::event (this=0xbfba01a4, e=0x9630518) at kernel/qcoreapplication.cpp:1533
#19 0xb633fe46 in QApplication::event (this=0xbfba01a4, e=0x9630518) at kernel/qapplication.cpp:2353
#20 0xb633b4dc in QApplicationPrivate::notify_helper (this=0x91e2648, receiver=0xbfba01a4, e=0x9630518) at kernel/qapplication.cpp:4300
#21 0xb634205e in QApplication::notify (this=0xbfba01a4, receiver=0xbfba01a4, e=0x9630518) at kernel/qapplication.cpp:3704
#22 0xb733cf2a in KApplication::notify (this=0xbfba01a4, receiver=0xbfba01a4, event=0x9630518) at ../../kdeui/kernel/kapplication.cpp:302
#23 0xb6deba3b in QCoreApplication::notifyInternal (this=0xbfba01a4, receiver=0xbfba01a4, event=0x9630518) at kernel/qcoreapplication.cpp:704
#24 0xb6dee473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x91c0a60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#25 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x91c0a60) at kernel/qcoreapplication.cpp:1345
#26 0xb6dee5dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#27 0xb6e17adf in QCoreApplication::sendPostedEvents (s=0x91e62b8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#28 postEventSourceDispatch (s=0x91e62b8) at kernel/qeventdispatcher_glib.cpp:276
#29 0xb42665e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0xb426a2d8 in ?? () from /lib/libglib-2.0.so.0
#31 0xb426a4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0xb6e175d5 in QEventDispatcherGlib::processEvents (this=0x91c0588, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#33 0xb63fb135 in QGuiEventDispatcherGlib::processEvents (this=0x91c0588, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0xb6dea059 in QEventLoop::processEvents (this=0xbfba0104, flags=) at kernel/qeventloop.cpp:149
#35 0xb6dea4aa in QEventLoop::exec (this=0xbfba0104, flags=...) at kernel/qeventloop.cpp:201
#36 0xb6dee69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#37 0xb633b577 in QApplication::exec () at kernel/qapplication.cpp:3579
#38 0x0804b472 in main (argc=1, argv=0xbfba03c4) at ../../../kontact/src/main.cpp:224

This bug may be a duplicate of or related to bug 246918.

Possible duplicates by query: bug 246918, bug 246171, bug 241027, bug 238493, bug 237591.

Reported using DrKonqi