Application: kontact (4.10)
KDE Platform Version: 4.10.00 "release 550"
Qt Version: 4.8.4
Operating System: Linux 3.4.28-2.20-desktop x86_64
Distribution: "openSUSE 12.2 (x86_64)"

-- Information about the crash:
changing colors on calendars.  Did have an email open to reply to someone but nothing else.

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 0x7fe086b8b780 (LWP 4446))]

Thread 3 (Thread 0x7fe06dede700 (LWP 4448)):
#0  0x00007fe07e9978f4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007fe083384437 in ?? () from /usr/lib64/libQtWebKit.so.4
#2  0x00007fe083384469 in ?? () from /usr/lib64/libQtWebKit.so.4
#3  0x00007fe07e993e0e in start_thread () from /lib64/libpthread.so.0
#4  0x00007fe0840e62cd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fe06d5dd700 (LWP 4449)):
#0  0x00007fe07d7c44a1 in g_mutex_unlock () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fe07d788019 in g_main_context_query () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe07d7885f9 in ?? () from /usr/lib64/libglib-2.0.so.0
#3  0x00007fe07d7887a4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#4  0x00007fe085512166 in QEventDispatcherGlib::processEvents (this=0x7fe0680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fe0854e297f in QEventLoop::processEvents (this=this@entry=0x7fe06d5dce00, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fe0854e2c08 in QEventLoop::exec (this=0x7fe06d5dce00, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fe0853e50e0 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#8  0x00007fe0853e80bc in QThreadPrivate::start (arg=0xdebeb0) at thread/qthread_unix.cpp:338
#9  0x00007fe07e993e0e in start_thread () from /lib64/libpthread.so.0
#10 0x00007fe0840e62cd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fe086b8b780 (LWP 4446)):
[KCrash Handler]
#6  ExternalRefCount (other=..., this=0x7fff28cc1ec0) at /usr/include/QtCore/qsharedpointer_impl.h:396
#7  QSharedPointer (other=..., this=0x7fff28cc1ec0) at /usr/include/QtCore/qsharedpointer_impl.h:480
#8  IncidenceTreeModel::Private::onDataChanged (this=0x5ec5ed0, begin=..., end=...) at /usr/src/debug/kdepim-4.10.0/korganizer/views/todoview/incidencetreemodel.cpp:180
#9  0x00007fe0854f912f in QMetaObject::activate (sender=0x658e7f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff28cc2100) at kernel/qobject.cpp:3548
#10 0x00007fe085543647 in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=...) at .moc/release-shared/moc_qabstractitemmodel.cpp:164
#11 0x00007fe084e19d7a in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=0x658e810, source_top_left=..., source_bottom_right=...) at itemviews/qsortfilterproxymodel.cpp:1210
#12 0x00007fe0854f912f in QMetaObject::activate (sender=0x658db60, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff28cc23a0) at kernel/qobject.cpp:3548
#13 0x00007fe085543647 in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=...) at .moc/release-shared/moc_qabstractitemmodel.cpp:164
#14 0x00007fe084e19d7a in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=0x658dce0, source_top_left=..., source_bottom_right=...) at itemviews/qsortfilterproxymodel.cpp:1210
#15 0x00007fe0854f912f in QMetaObject::activate (sender=0x6583e30, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff28cc2640) at kernel/qobject.cpp:3548
#16 0x00007fe085543647 in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=...) at .moc/release-shared/moc_qabstractitemmodel.cpp:164
#17 0x00007fe085f302e3 in KSelectionProxyModelPrivate::sourceDataChanged (this=0x658d890, topLeft=..., bottomRight=...) at /usr/src/debug/kdelibs-4.10.0/kdeui/itemviews/kselectionproxymodel.cpp:667
#18 0x00007fe0854f912f in QMetaObject::activate (sender=0x5c897a0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff28cc2900) at kernel/qobject.cpp:3548
#19 0x00007fe085543647 in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=...) at .moc/release-shared/moc_qabstractitemmodel.cpp:164
#20 0x00007fe080d8bd45 in Akonadi::EntityTreeModelPrivate::dataChanged (this=this@entry=0x5c89f80, top=..., bottom=...) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/entitytreemodel_p.cpp:1692
#21 0x00007fe080e26e51 in Akonadi::EntityTreeModelPrivate::monitoredItemChanged (this=0x5c89f80, item=...) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/entitytreemodel_p.cpp:1130
#22 0x00007fe0854f912f in QMetaObject::activate (sender=0x1574ec0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff28cc2b70) at kernel/qobject.cpp:3548
#23 0x00007fe080d8dbc7 in Akonadi::Monitor::itemChanged (this=<optimized out>, _t1=..., _t2=...) at /usr/src/debug/kdepimlibs-4.10.0/build/akonadi/moc_monitor.cpp:189
#24 0x00007fe080dc69c3 in Akonadi::MonitorPrivate::emitItemNotification (this=this@entry=0x5c88af0, msg=..., item=..., collection=..., collectionDest=...) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/monitor_p.cpp:554
#25 0x00007fe080dcea82 in Akonadi::MonitorPrivate::emitNotification (this=this@entry=0x5c88af0, msg=...) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/monitor_p.cpp:296
#26 0x00007fe080dceaf9 in Akonadi::ChangeRecorderPrivate::emitNotification (this=0x5c88af0, msg=...) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/changerecorder_p.cpp:54
#27 0x00007fe080dcd80f in Akonadi::MonitorPrivate::flushPipeline (this=this@entry=0x5c88af0) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/monitor_p.cpp:457
#28 0x00007fe080dcd8a9 in Akonadi::MonitorPrivate::dataAvailable (this=0x5c88af0) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/monitor_p.cpp:466
#29 0x00007fe0854f912f in QMetaObject::activate (sender=0x4aa4a50, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3548
#30 0x00007fe080e533cd in Akonadi::EntityCache<Akonadi::Item, Akonadi::ItemFetchJob, Akonadi::ItemFetchScope>::processResult (this=0x4aa4a50, job=0x50ca530) at /usr/src/debug/kdepimlibs-4.10.0/akonadi/entitycache_p.h:196
#31 0x00007fe0854f912f in QMetaObject::activate (sender=0x50ca530, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff28cc3270) at kernel/qobject.cpp:3548
#32 0x00007fe085971b02 in KJob::result (this=this@entry=0x50ca530, _t1=_t1@entry=0x50ca530) at /usr/src/debug/kdelibs-4.10.0/build/kdecore/kjob.moc:208
#33 0x00007fe085971b40 in KJob::emitResult (this=0x50ca530) at /usr/src/debug/kdelibs-4.10.0/kdecore/jobs/kjob.cpp:318
#34 0x00007fe0854f860e in QObject::event (this=0x50ca530, e=<optimized out>) at kernel/qobject.cpp:1203
#35 0x00007fe08488d85c in QApplicationPrivate::notify_helper (this=this@entry=0xc182d0, receiver=receiver@entry=0x50ca530, e=e@entry=0x7f5b400) at kernel/qapplication.cpp:4562
#36 0x00007fe084891cda in QApplication::notify (this=0x7fff28cc3d10, receiver=0x50ca530, e=0x7f5b400) at kernel/qapplication.cpp:4423
#37 0x00007fe085f48a96 in KApplication::notify (this=0x7fff28cc3d10, receiver=0x50ca530, event=0x7f5b400) at /usr/src/debug/kdelibs-4.10.0/kdeui/kernel/kapplication.cpp:311
#38 0x00007fe0854e3c2e in QCoreApplication::notifyInternal (this=0x7fff28cc3d10, receiver=receiver@entry=0x50ca530, event=event@entry=0x7f5b400) at kernel/qcoreapplication.cpp:946
#39 0x00007fe0854e7591 in sendEvent (event=0x7f5b400, receiver=0x50ca530) at kernel/qcoreapplication.h:231
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xbdc670) at kernel/qcoreapplication.cpp:1570
#41 0x00007fe085511fb3 in sendPostedEvents () at kernel/qcoreapplication.h:236
#42 postEventSourceDispatch (s=0xc1e560) at kernel/qeventdispatcher_glib.cpp:279
#43 0x00007fe07d7883b5 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#44 0x00007fe07d7886e8 in ?? () from /usr/lib64/libglib-2.0.so.0
#45 0x00007fe07d7887a4 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#46 0x00007fe085512146 in QEventDispatcherGlib::processEvents (this=0xbe1ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#47 0x00007fe08492dbee in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#48 0x00007fe0854e297f in QEventLoop::processEvents (this=this@entry=0x7fff28cc3b80, flags=...) at kernel/qeventloop.cpp:149
#49 0x00007fe0854e2c08 in QEventLoop::exec (this=0x7fff28cc3b80, flags=...) at kernel/qeventloop.cpp:204
#50 0x00007fe0854e78a8 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#51 0x0000000000403649 in main (argc=1, argv=0x7fff28cc3e58) at /usr/src/debug/kdepim-4.10.0/kontact/src/main.cpp:219

Reported using DrKonqi