Application: kontact (4.4.10)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu Natty (development branch)

-- Information about the crash:
then 2 instances could be seen, but after alt+F4 on one of them both of them were stopped/crashed

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f32fdeb97a0 (LWP 1844))]

Thread 3 (Thread 0x7f32dbbc0700 (LWP 1888)):
#0  0x00007f32fb306f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f32f4d34104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f32f4d349f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f32dccd7d44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f32f4d5b3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f32f51ffd8c in start_thread (arg=0x7f32dbbc0700) at pthread_create.c:304
#6  0x00007f32fb31404d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f32d09d7700 (LWP 2081)):
#0  0x00007f32fb306f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f32f4d34104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f32f4d34639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f32fba4e446 in QEventDispatcherGlib::processEvents (this=0x2a050e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f32fba22882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f32fba22abc in QEventLoop::exec (this=0x7f32d09d6db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f32fb939924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f32fba04c2f in QInotifyFileSystemWatcherEngine::run (this=0x1dc1a90) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f32fb93c175 in QThreadPrivate::start (arg=0x1dc1a90) at thread/qthread_unix.cpp:320
#9  0x00007f32f51ffd8c in start_thread (arg=0x7f32d09d7700) at pthread_create.c:304
#10 0x00007f32fb31404d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f32fdeb97a0 (LWP 1844)):
[KCrash Handler]
#6  begin (this=0x1f15660) at /usr/include/qt4/QtCore/qlist.h:97
#7  begin (this=0x1f15660) at /usr/include/qt4/QtCore/qlist.h:255
#8  KMMainWidget::initializeFilterActions (this=0x1f15660) at ../../kmail/kmmainwidget.cpp:4777
#9  0x00007f32e014f3f4 in KMailPart::guiActivateEvent (this=0x1cb6270, e=0x7fffde2845c0) at ../../kmail/kmail_part.cpp:183
#10 0x00007f32fba374fc in QObject::event (this=0x1cb6270, e=<value optimized out>) at kernel/qobject.cpp:1257
#11 0x00007f32fc3e29e4 in QApplicationPrivate::notify_helper (this=0x175c010, receiver=0x1cb6270, e=0x7fffde2845c0) at kernel/qapplication.cpp:4462
#12 0x00007f32fc3e73aa in QApplication::notify (this=<value optimized out>, receiver=0x1cb6270, e=0x7fffde2845c0) at kernel/qapplication.cpp:4341
#13 0x00007f32fd101866 in KApplication::notify (this=0x7fffde2869a0, receiver=0x1cb6270, event=0x7fffde2845c0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f32fba2349c in QCoreApplication::notifyInternal (this=0x7fffde2869a0, receiver=0x1cb6270, event=0x7fffde2845c0) at kernel/qcoreapplication.cpp:731
#15 0x00007f32fb008c8a in sendEvent (this=0x18455d0, part=0x26836e0) at /usr/include/qt4/QtCore/qcoreapplication.h:215
#16 KParts::MainWindow::createGUI (this=0x18455d0, part=0x26836e0) at ../../kparts/mainwindow.cpp:101
#17 0x00007f32fdadd863 in Kontact::MainWindow::selectPlugin (this=0x18455d0, plugin=0x1c8ccb0) at ../../../kontact/src/mainwindow.cpp:851
#18 0x00007f32fdadd15a in Kontact::MainWindow::qt_metacall (this=0x18455d0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffde284b30) at ./mainwindow.moc:113
#19 0x00007f32fba385f8 in QMetaObject::activate (sender=0x18a81f0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffde284b30) at kernel/qobject.cpp:3287
#20 0x00007f32fdae01bf in Kontact::SidePaneBase::pluginSelected (this=<value optimized out>, _t1=0x1c8ccb0) at ./sidepanebase.moc:90
#21 0x00007f32fdae0210 in Kontact::SidePaneBase::qt_metacall (this=0x18a81f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffde284c70) at ./sidepanebase.moc:77
#22 0x00007f32fdae02b8 in Kontact::IconSidePane::qt_metacall (this=0x18a81f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at ./iconsidepane.moc:145
#23 0x00007f32fba385f8 in QMetaObject::activate (sender=0x18a9da0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffde284c70) at kernel/qobject.cpp:3287
#24 0x00007f32fdae0b9f in Kontact::Navigator::pluginActivated (this=<value optimized out>, _t1=0x1c8ccb0) at ./iconsidepane.moc:96
#25 0x00007f32fdae0c30 in Kontact::Navigator::slotCurrentChanged (this=0x18a9da0, current=...) at ../../../kontact/src/iconsidepane.cpp:475
#26 0x00007f32fdae0ce1 in Kontact::Navigator::qt_metacall (this=0x18a9da0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffde284dc0) at ./iconsidepane.moc:82
#27 0x00007f32fba385f8 in QMetaObject::activate (sender=0x18ab060, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffde284dc0) at kernel/qobject.cpp:3287
#28 0x00007f32fc94943a in QItemSelectionModel::currentChanged (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>) at .moc/release-shared/moc_qitemselectionmodel.cpp:159
#29 0x00007f32fc949530 in QItemSelectionModel::setCurrentIndex (this=0x18ab060, index=..., command=<value optimized out>) at itemviews/qitemselectionmodel.cpp:1169
#30 0x00007f32fc8f786c in QAbstractItemView::mousePressEvent (this=0x18a9da0, event=<value optimized out>) at itemviews/qabstractitemview.cpp:1666
#31 0x00007f32fc433fa1 in QWidget::event (this=0x18a9da0, event=0x7fffde285ce0) at kernel/qwidget.cpp:8255
#32 0x00007f32fc7e3a66 in QFrame::event (this=0x18a9da0, e=0x7fffde285ce0) at widgets/qframe.cpp:557
#33 0x00007f32fc8f4d7b in QAbstractItemView::viewportEvent (this=0x18a9da0, event=0x7fffde285ce0) at itemviews/qabstractitemview.cpp:1628
#34 0x00007f32fba23627 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x18a6830, event=0x7fffde285ce0) at kernel/qcoreapplication.cpp:846
#35 0x00007f32fc3e29b1 in QApplicationPrivate::notify_helper (this=0x175c010, receiver=0x18a6830, e=0x7fffde285ce0) at kernel/qapplication.cpp:4458
#36 0x00007f32fc3e7db3 in QApplication::notify (this=<value optimized out>, receiver=0x18a6830, e=0x7fffde285ce0) at kernel/qapplication.cpp:4023
#37 0x00007f32fd101866 in KApplication::notify (this=0x7fffde2869a0, receiver=0x18a6830, event=0x7fffde285ce0) at ../../kdeui/kernel/kapplication.cpp:311
#38 0x00007f32fba2349c in QCoreApplication::notifyInternal (this=0x7fffde2869a0, receiver=0x18a6830, event=0x7fffde285ce0) at kernel/qcoreapplication.cpp:731
#39 0x00007f32fc3e3a0d in sendEvent (receiver=0x18a6830, event=0x7fffde285ce0, alienWidget=0x18a6830, nativeWidget=0x18455d0, buttonDown=0x7f32fcec3218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#40 QApplicationPrivate::sendMouseEvent (receiver=0x18a6830, event=0x7fffde285ce0, alienWidget=0x18a6830, nativeWidget=0x18455d0, buttonDown=0x7f32fcec3218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#41 0x00007f32fc463600 in QETWidget::translateMouseEvent (this=0x18455d0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4556
#42 0x00007f32fc46204a in QApplication::x11ProcessEvent (this=0x7fffde2869a0, event=0x7fffde286630) at kernel/qapplication_x11.cpp:3678
#43 0x00007f32fc48a162 in x11EventSourceDispatch (s=0x1764b90, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#44 0x00007f32f4d33bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f32f4d343a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f32f4d34639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f32fba4e3ef in QEventDispatcherGlib::processEvents (this=0x1701370, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#48 0x00007f32fc489dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#49 0x00007f32fba22882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#50 0x00007f32fba22abc in QEventLoop::exec (this=0x7fffde286930, flags=...) at kernel/qeventloop.cpp:201
#51 0x00007f32fba26ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#52 0x0000000000403f70 in main (argc=3, argv=<value optimized out>) at ../../../kontact/src/main.cpp:226

Possible duplicates by query: bug 264592.

Reported using DrKonqi