Application: kontact (4.10.5)
KDE Platform Version: 4.10.2
Qt Version: 4.8.5
Operating System: Linux 3.8.13.4-desktop-1.mga3 x86_64
Distribution: "Mageia 3"

-- Information about the crash:
- What I was doing when the application crashed:
I have just upgraded from an old KDE 4.4 (on amdv 10.2) installation to a brand new 4.10 (on amgeia 3).
When asked what I wanted to do, I chose upgrade.
The upgrade apparently went well, since I got the green tick at the end of the list of things done by the upgrader.
And now, when I start kontact/kmail, I get this crash message everytime.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fa5f29be780 (LWP 9626))]

Thread 3 (Thread 0x7fa5d46ab700 (LWP 9627)):
#0  0x00007fa5ea2605c4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fa5ef125f75 in ?? () from /lib64/libQtWebKit.so.4
#2  0x00007fa5ef125fc9 in ?? () from /lib64/libQtWebKit.so.4
#3  0x00007fa5ea25cd18 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fa5eff1b7cd in clone () from /lib64/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa593e98700 (LWP 9628)):
#0  0x00007fa5ea2605c4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fa5eee68719 in ?? () from /lib64/libQtWebKit.so.4
#2  0x00007fa5ef15449e in ?? () from /lib64/libQtWebKit.so.4
#3  0x00007fa5ea25cd18 in start_thread () from /lib64/libpthread.so.0
#4  0x00007fa5eff1b7cd in clone () from /lib64/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa5f29be780 (LWP 9626)):
[KCrash Handler]
#4  0x00007fa5f0c076e1 in QItemSelectionModel::selection() const () from /lib64/libQtGui.so.4
#5  0x00007fa5ec476d3c in Akonadi::AttributeFactory::registerAttribute(Akonadi::Attribute*) () from /lib64/libakonadi-kde.so.4
#6  0x00007fa5925e0eab in _GLOBAL__sub_I_attributeregistrar.cpp () from /lib64/libakonadi-kmime.so.4
#7  0x00007fa5f2800696 in call_init.part.0 () from /lib64/ld-linux-x86-64.so.2
#8  0x00007fa5f2800750 in _dl_init_internal () from /lib64/ld-linux-x86-64.so.2
#9  0x00007fa5f2804463 in dl_open_worker () from /lib64/ld-linux-x86-64.so.2
#10 0x00007fa5f2800526 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#11 0x00007fa5f2803d39 in _dl_open () from /lib64/ld-linux-x86-64.so.2
#12 0x00007fa5e94f2026 in dlopen_doit () from /lib64/libdl.so.2
#13 0x00007fa5f2800526 in _dl_catch_error () from /lib64/ld-linux-x86-64.so.2
#14 0x00007fa5e94f264c in _dlerror_run () from /lib64/libdl.so.2
#15 0x00007fa5e94f20c1 in dlopen () from /lib64/libdl.so.2
#16 0x00007fa5f12ec1b6 in QLibraryPrivate::load_sys() () from /lib64/libQtCore.so.4
#17 0x00007fa5f12e8e2a in QLibraryPrivate::load() () from /lib64/libQtCore.so.4
#18 0x00007fa5f12e910b in QLibraryPrivate::loadPlugin() () from /lib64/libQtCore.so.4
#19 0x00007fa5f186bc38 in KPluginLoader::load() () from /lib64/libkdecore.so.5
#20 0x00007fa5f186bf07 in KPluginLoader::factory() () from /lib64/libkdecore.so.5
#21 0x00007fa5f25ddeea in Kontact::MainWindow::loadPlugins() () from /lib64/libkontactprivate.so.4
#22 0x00007fa5f25df0e5 in Kontact::MainWindow::initObject() () from /lib64/libkontactprivate.so.4
#23 0x00007fa5f25df74a in Kontact::MainWindow::MainWindow() () from /lib64/libkontactprivate.so.4
#24 0x0000000000403ef4 in KontactApp::newInstance() ()
#25 0x00007fa5f1d743c2 in KUniqueApplicationAdaptor::newInstance(QByteArray const&, QByteArray const&) () from /lib64/libkdeui.so.5
#26 0x00007fa5f1d74444 in KUniqueApplicationAdaptor::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /lib64/libkdeui.so.5
#27 0x00007fa5f1d7457b in KUniqueApplicationAdaptor::qt_metacall(QMetaObject::Call, int, void**) () from /lib64/libkdeui.so.5
#28 0x00007fa5ec84bed3 in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QList<int> const&, int) () from /lib64/libQtDBus.so.4
#29 0x00007fa5ec84cf06 in QDBusConnectionPrivate::activateCall(QObject*, int, QDBusMessage const&) () from /lib64/libQtDBus.so.4
#30 0x00007fa5ec84d946 in QDBusConnectionPrivate::activateObject(QDBusConnectionPrivate::ObjectTreeNode&, QDBusMessage const&, int) () from /lib64/libQtDBus.so.4
#31 0x00007fa5ec84da3b in QDBusActivateObjectEvent::placeMetaCall(QObject*) () from /lib64/libQtDBus.so.4
#32 0x00007fa5f130edae in QObject::event(QEvent*) () from /lib64/libQtCore.so.4
#33 0x00007fa5f06ac4c4 in QApplication::event(QEvent*) () from /lib64/libQtGui.so.4
#34 0x00007fa5f06aa3bc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQtGui.so.4
#35 0x00007fa5f06ae83a in QApplication::notify(QObject*, QEvent*) () from /lib64/libQtGui.so.4
#36 0x00007fa5f1d6e0f6 in KApplication::notify(QObject*, QEvent*) () from /lib64/libkdeui.so.5
#37 0x00007fa5f12fa4ae in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib64/libQtCore.so.4
#38 0x00007fa5f12fdf61 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQtCore.so.4
#39 0x00007fa5f1328813 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQtCore.so.4
#40 0x00007fa5e92426d5 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#41 0x00007fa5e9242a08 in g_main_context_iterate.isra.24 () from /lib64/libglib-2.0.so.0
#42 0x00007fa5e9242ac4 in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#43 0x00007fa5f13289a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#44 0x00007fa5f074a52e in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtGui.so.4
#45 0x00007fa5f12f915f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#46 0x00007fa5f12f93e8 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#47 0x00007fa5f12fe278 in QCoreApplication::exec() () from /lib64/libQtCore.so.4
#48 0x00000000004033bb in main ()

Reported using DrKonqi