Application: kded4 (4.14.6)
KDE Platform Version: 4.14.6
Qt Version: 4.8.6
Operating System: Linux 3.16.7-21-desktop x86_64
Distribution: "openSUSE 13.2 (Harlequin) (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed: had changed settings - What I was doing when the application crashed: had just changed the settings for graphic effects (from OpenGL 3 -> 2, from native to raster) and KDE froze.  Restart via Ctrl+Alt+Backspace resulted in dual crash notices

- Custom settings of the application:

The crash can be reproduced every time.

-- Backtrace:
Application: KDE Daemon (kded4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[KCrash Handler]
#5  0x00007ff9a1019006 in __strcmp_ssse3 () at /lib64/libc.so.6
#6  0x00007ff985758a9e in QMetaType::registerNormalizedType(QByteArray const&, void (*)(void*), void* (*)(void const*), void (*)(void*), void* (*)(void*, void const*), int, QFlags<QMetaType::TypeFlag>, QMetaObject const*) () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff98315b077 in  () at /usr/lib64/libQt5Gui.so.5
#8  0x00007ff9a37de92a in call_init.part () at /lib64/ld-linux-x86-64.so.2
#9  0x00007ff9a37dea13 in _dl_init_internal () at /lib64/ld-linux-x86-64.so.2
#10 0x00007ff9a37e2b48 in dl_open_worker () at /lib64/ld-linux-x86-64.so.2
#11 0x00007ff9a37de7e4 in _dl_catch_error () at /lib64/ld-linux-x86-64.so.2
#12 0x00007ff9a37e233b in _dl_open () at /lib64/ld-linux-x86-64.so.2
#13 0x00007ff99ec0a02b in dlopen_doit () at /lib64/libdl.so.2
#14 0x00007ff9a37de7e4 in _dl_catch_error () at /lib64/ld-linux-x86-64.so.2
#15 0x00007ff99ec0a5dd in _dlerror_run () at /lib64/libdl.so.2
#16 0x00007ff99ec0a0c1 in dlopen@@GLIBC_2.2.5 () at /lib64/libdl.so.2
#17 0x00007ff9a25f8518 in QLibraryPrivate::load_sys() (this=this@entry=0x1bdf910) at plugin/qlibrary_unix.cpp:226
#18 0x00007ff9a25f349a in QLibraryPrivate::load() (this=0x1bdf910) at plugin/qlibrary.cpp:469
#19 0x00007ff9a25f3aa3 in QLibraryPrivate::loadPlugin() (this=0x1bdf910) at plugin/qlibrary.cpp:519
#20 0x00007ff9a2b771a8 in KPluginLoader::load() () at /usr/lib64/libkdecore.so.5
#21 0x00007ff9a2b77448 in KPluginLoader::factory() () at /usr/lib64/libkdecore.so.5
#22 0x00007ff98bb0b304 in  () at /usr/lib64/libkdeinit4_kded4.so
#23 0x00007ff98bb0bb89 in  () at /usr/lib64/libkdeinit4_kded4.so
#24 0x00007ff98bb0c348 in  () at /usr/lib64/libkdeinit4_kded4.so
#25 0x00007ff98bb0c3b3 in  () at /usr/lib64/libkdeinit4_kded4.so
#26 0x00007ff98bb0e86d in  () at /usr/lib64/libkdeinit4_kded4.so
#27 0x00007ff9a33b1f0a in  () at /usr/lib64/libkdeui.so.5
#28 0x00007ff9a33b1f85 in  () at /usr/lib64/libkdeui.so.5
#29 0x00007ff9a33b2193 in  () at /usr/lib64/libkdeui.so.5
#30 0x00007ff99f353d4d in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QList<int> const&, int) (this=this@entry=0x1d33e80, object=object@entry=0x1ee6780, msg=..., metaTypes=..., slotIdx=4) at qdbusintegrator.cpp:951
#31 0x00007ff99f354ed9 in QDBusConnectionPrivate::activateCall(QObject*, int, QDBusMessage const&) (this=this@entry=0x1d33e80, object=0x1ee6780, flags=flags@entry=337, msg=...) at qdbusintegrator.cpp:856
#32 0x00007ff99f3559bd in QDBusConnectionPrivate::activateObject(QDBusConnectionPrivate::ObjectTreeNode&, QDBusMessage const&, int) (this=0x1d33e80, node=..., msg=..., pathStartPos=<optimized out>) at qdbusintegrator.cpp:1427
#33 0x00007ff99f355a8b in QDBusActivateObjectEvent::placeMetaCall(QObject*) (this=0x1f3dee0) at qdbusintegrator.cpp:1541
#34 0x00007ff9a261f59e in QObject::event(QEvent*) (this=0x7fff4862ee70, e=<optimized out>) at kernel/qobject.cpp:1231
#35 0x00007ff9a1788733 in QApplication::event(QEvent*) () at /usr/lib64/libQtGui.so.4
#36 0x00007ff9a178376c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#37 0x00007ff9a1789cad in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQtGui.so.4
#38 0x00007ff9a33aacea in KApplication::notify(QObject*, QEvent*) () at /usr/lib64/libkdeui.so.5
#39 0x00007ff9a26072ad in QCoreApplication::notifyInternal(QObject*, QEvent*) (this=0x7fff4862ee70, receiver=receiver@entry=0x7fff4862ee70, event=event@entry=0x1f3dee0) at kernel/qcoreapplication.cpp:953
#40 0x00007ff9a260a57d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (event=0x1f3dee0, receiver=0x7fff4862ee70) at kernel/qcoreapplication.h:231
#41 0x00007ff9a260a57d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1bb9490) at kernel/qcoreapplication.cpp:1577
#42 0x00007ff9a260aa23 in QCoreApplication::sendPostedEvents(QObject*, int) (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#43 0x00007ff9a26348fe in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) () at kernel/qcoreapplication.h:236
#44 0x00007ff9a26348fe in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x1d27550) at kernel/qeventdispatcher_glib.cpp:300
#45 0x00007ff99e0e2a04 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#46 0x00007ff99e0e2c48 in  () at /usr/lib64/libglib-2.0.so.0
#47 0x00007ff99e0e2cec in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#48 0x00007ff9a26340be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x1d36bb0, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#49 0x00007ff9a1820676 in  () at /usr/lib64/libQtGui.so.4
#50 0x00007ff9a2605e6f in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff4862ed40, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007ff9a2606165 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fff4862ed40, flags=...) at kernel/qeventloop.cpp:204
#52 0x00007ff9a260b5b9 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1225
#53 0x00007ff98bb0d32b in kdemain () at /usr/lib64/libkdeinit4_kded4.so
#54 0x0000000000408815 in _start ()

Reported using DrKonqi