Application: kontact (4.4.6)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-22-generic x86_64
Distribution: Ubuntu maverick (development branch)

-- Information about the crash:
I was in my feeds and then I selected Summary from the icon list.  This is when Kontact crashed.  I've noticed the same behavior when switching from Feeds to Mail as well.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f298c92a780 (LWP 14037))]

Thread 2 (Thread 0x7f2960e68710 (LWP 14071)):
#0  0x00007f298a0ad6b4 in operator!= (s=0x141cd30, timeout=0x7f2960e67bfc) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:75
#1  postEventSourcePrepare (s=0x141cd30, timeout=0x7f2960e67bfc) at kernel/qeventdispatcher_glib.cpp:265
#2  0x00007f29826dba11 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#3  0x00007f29826dbe78 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007f29826dc45c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x00007f298a0ad1e6 in QEventDispatcherGlib::processEvents (this=0x133de50, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#6  0x00007f298a07fa02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#7  0x00007f298a07fdec in QEventLoop::exec (this=0x7f2960e67d90, flags=) at kernel/qeventloop.cpp:201
#8  0x00007f2989f8a2fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#9  0x00007f298a05f5f8 in QInotifyFileSystemWatcherEngine::run (this=0x119e6a0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f2989f8d27e in QThreadPrivate::start (arg=0x119e6a0) at thread/qthread_unix.cpp:266
#11 0x00007f2984a6b971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#12 0x00007f298997592d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f298c92a780 (LWP 14037)):
[KCrash Handler]
#6  0x00007f298b01d4fc in QSortFilterProxyModelPrivate::proxy_to_source (this=0x919cc0, proxy_index=<value optimized out>) at itemviews/qsortfilterproxymodel.cpp:369
#7  0x00007f298b01d61d in QSortFilterProxyModel::mapToSource (this=<value optimized out>, proxyIndex=...) at itemviews/qsortfilterproxymodel.cpp:2491
#8  0x00007f298b013ff5 in QSortFilterProxyModel::buddy (this=0xab0f10, index=...) at itemviews/qsortfilterproxymodel.cpp:1994
#9  0x00007f298af89ffb in QAbstractItemView::currentChanged (this=0x925480, current=..., previous=...) at itemviews/qabstractitemview.cpp:3385
#10 0x00007f298af8c4b3 in QAbstractItemView::qt_metacall (this=0x925480, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff8c08cf60) at .moc/release-shared/moc_qabstractitemview.cpp:238
#11 0x00007f298b11aed5 in QListView::qt_metacall (this=0x5, _c=9542848, _id=9543600, _a=0x0) at .moc/release-shared/moc_qlistview.cpp:111
#12 0x00007f298c55b140 in Kontact::Navigator::qt_metacall (this=0x5, _c=9542848, _id=9543600, _a=0x0) at ./iconsidepane.moc:76
#13 0x00007f298a098b27 in QMetaObject::activate (sender=0x90af80, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3280
#14 0x00007f298afdd61a in QItemSelectionModel::currentChanged (this=0x5, _t1=<value optimized out>, _t2=<value optimized out>) at .moc/release-shared/moc_qitemselectionmodel.cpp:159
#15 0x00007f298afdd762 in QItemSelectionModel::setCurrentIndex (this=0x90af80, index=..., command=<value optimized out>) at itemviews/qitemselectionmodel.cpp:1156
#16 0x00007f298af8d144 in QAbstractItemView::mousePressEvent (this=0x925480, event=<value optimized out>) at itemviews/qabstractitemview.cpp:1657
#17 0x00007f298aa8d035 in QWidget::event (this=0x925480, event=0x7fff8c08deb0) at kernel/qwidget.cpp:8183
#18 0x00007f298ae585e6 in QFrame::event (this=0x925480, e=0x7fff8c08deb0) at widgets/qframe.cpp:557
#19 0x00007f298af91a8b in QAbstractItemView::viewportEvent (this=0x925480, event=0x7fff8c08deb0) at itemviews/qabstractitemview.cpp:1619
#20 0x00007f298a080507 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x916720, event=0x7fff8c08deb0) at kernel/qcoreapplication.cpp:847
#21 0x00007f298aa36fac in QApplicationPrivate::notify_helper (this=0x921870, receiver=0x916720, e=0x7fff8c08deb0) at kernel/qapplication.cpp:4392
#22 0x00007f298aa3d30e in QApplication::notify (this=0x7fff8c08ebc0, receiver=0x916720, e=0x7fff8c08deb0) at kernel/qapplication.cpp:3959
#23 0x00007f298b789156 in KApplication::notify (this=0x7fff8c08ebc0, receiver=0x916720, event=0x7fff8c08deb0) at ../../kdeui/kernel/kapplication.cpp:310
#24 0x00007f298a080cdc in QCoreApplication::notifyInternal (this=0x7fff8c08ebc0, receiver=0x916720, event=0x7fff8c08deb0) at kernel/qcoreapplication.cpp:732
#25 0x00007f298aa3bdbe in sendEvent (receiver=0x916720, event=0x7fff8c08deb0, alienWidget=0x916720, nativeWidget=0xaac330, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#26 QApplicationPrivate::sendMouseEvent (receiver=0x916720, event=0x7fff8c08deb0, alienWidget=0x916720, nativeWidget=0xaac330, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>, spontaneous=true) at kernel/qapplication.cpp:3058
#27 0x00007f298aabf345 in QETWidget::translateMouseEvent (this=0xaac330, event=<value optimized out>) at kernel/qapplication_x11.cpp:4403
#28 0x00007f298aabdc5c in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff8c08e7d0) at kernel/qapplication_x11.cpp:3536
#29 0x00007f298aaea0e2 in x11EventSourceDispatch (s=0x9120c0, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#30 0x00007f29826d8342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#31 0x00007f29826dc2a8 in ?? () from /lib/libglib-2.0.so.0
#32 0x00007f29826dc45c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#33 0x00007f298a0ad193 in QEventDispatcherGlib::processEvents (this=0x8e2e90, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#34 0x00007f298aae9a4e in QGuiEventDispatcherGlib::processEvents (this=0x5, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#35 0x00007f298a07fa02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#36 0x00007f298a07fdec in QEventLoop::exec (this=0x7fff8c08eb00, flags=) at kernel/qeventloop.cpp:201
#37 0x00007f298a083ebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#38 0x0000000000403b4e in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../kontact/src/main.cpp:224

Possible duplicates by query: bug 250031.

Reported using DrKonqi