Application: kontact (4.4.9)
KDE Platform Version: 4.6.1 (4.6.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-28-generic i686
Distribution: Ubuntu 10.10

-- Information about the crash:
Since I added the "Windows menu bar" plasmoid on my Panel, when I run Kontact, it chrashes and Bug report.
If I delete the "Windows menu bar" plasmoid : Kontact run successfully.
Kontact's isolated applications (KMail, KOrganizer, Akregator...) : no problem.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#7  0x00fa3cea in QAction::menu (this=0x92b4ac0) at kernel/qaction.cpp:748
#8  0x0170ed94 in DBusMenuExporterDBus::GetChildren (this=0x92b4b50, parentId=664, names=...) at ../3rdparty/dbusmenu-qt/src/dbusmenuexporterdbus_p.cpp:47
#9  0x01727708 in DBusMenuExporterDBus::qt_metacall (this=0x92b4b50, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfb7a6ec) at .moc/release-shared/moc_dbusmenuexporterdbus_p.cpp:106
#10 0x006809dc in QDBusConnectionPrivate::deliverCall (this=0x8f881d8, object=0x92b4b50, msg=..., metaTypes=..., slotIdx=8) at qdbusintegrator.cpp:919
#11 0x00681d25 in QDBusConnectionPrivate::activateCall (this=0x8f881d8, object=0x92b4b50, flags=4080, msg=...) at qdbusintegrator.cpp:829
#12 0x0068249c in QDBusConnectionPrivate::activateObject (this=0x8f881d8, node=..., msg=..., pathStartPos=10) at qdbusintegrator.cpp:1399
#13 0x00682a2a in QDBusActivateObjectEvent::placeMetaCall (this=0x9872480) at qdbusintegrator.cpp:1493
#14 0x057006a2 in QObject::event (this=0x92b4b50, e=0x9629df8) at kernel/qobject.cpp:1219
#15 0x00fabfdc in QApplicationPrivate::notify_helper (this=0x8f992b0, receiver=0x92b4b50, e=0x9872480) at kernel/qapplication.cpp:4396
#16 0x00fb204e in QApplication::notify (this=0xbfb7b104, receiver=0x92b4b50, e=0x9872480) at kernel/qapplication.cpp:3798
#17 0x00c917da in KApplication::notify (this=0xbfb7b104, receiver=0x92b4b50, event=0x9872480) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x056edb3b in QCoreApplication::notifyInternal (this=0xbfb7b104, receiver=0x92b4b50, event=0x9872480) at kernel/qcoreapplication.cpp:732
#19 0x056f0d8b in sendEvent (receiver=0x0, event_type=0, data=0x8f6eeb8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8f6eeb8) at kernel/qcoreapplication.cpp:1373
#21 0x056f0f4d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1266
#22 0x0571ca74 in sendPostedEvents (s=0x8f93d10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#23 postEventSourceDispatch (s=0x8f93d10) at kernel/qeventdispatcher_glib.cpp:277
#24 0x07489855 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#25 0x0748d668 in ?? () from /lib/libglib-2.0.so.0
#26 0x0748d848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#27 0x0571c565 in QEventDispatcherGlib::processEvents (this=0x8f6eb78, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#28 0x0106dbe5 in QGuiEventDispatcherGlib::processEvents (this=0x8f6eb78, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x056ec609 in QEventLoop::processEvents (this=0xbfb7b064, flags=) at kernel/qeventloop.cpp:149
#30 0x056eca8a in QEventLoop::exec (this=0xbfb7b064, flags=...) at kernel/qeventloop.cpp:201
#31 0x056f100f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#32 0x00faae07 in QApplication::exec () at kernel/qapplication.cpp:3672
#33 0x0804b132 in main (argc=1, argv=0xbfb7b324) at ../../../kontact/src/main.cpp:224

Possible duplicates by query: bug 265179, bug 261644.

Reported using DrKonqi