Application: plasma-desktop (4.11.3)
KDE Platform Version: 4.11.3
Qt Version: 4.8.5
Operating System: Linux 3.11.9-200.fc19.i686.PAE i686
Distribution (Platform): Fedora RPMs

-- Information about the crash:
- What I was doing when the application crashed:
I came into settings, I included special effects. then I pressed ctrl+alt+backspace, but plasma wasn't restored

The crash can be reproduced every time.

-- Backtrace:
Application: Оболочка Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xb2f147c0 (LWP 5638))]

Thread 2 (Thread 0xb1436b40 (LWP 5639)):
#0  0xb7796424 in __kernel_vsyscall ()
#1  0x4c0c733c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x419ec752 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib/libQtScript.so.4
#3  0x419ec7a0 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib/libQtScript.so.4
#4  0x4c0c39da in start_thread () from /lib/libpthread.so.0
#5  0x4bff3bfe in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb2f147c0 (LWP 5638)):
[KCrash Handler]
#6  0x4d1c866c in QDBusMessage::arguments() const () from /lib/libQtDBus.so.4
#7  0x4d1f9b5f in QDBusPendingReplyData::argumentAt(int) const () from /lib/libQtDBus.so.4
#8  0xaa3bcd44 in NMNetworkManagerNm09::NMNetworkManagerNm09(QObject*, QList<QVariant> const&) () from /usr/lib/kde4/solid_networkmanager09.so
#9  0xaa3b8f82 in QObject* KPluginFactory::createInstance<NMNetworkManagerNm09, QObject>(QWidget*, QObject*, QList<QVariant> const&) () from /usr/lib/kde4/solid_networkmanager09.so
#10 0x43831f38 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () from /lib/libkdecore.so.5
#11 0x442f7bf4 in Solid::Control::ManagerBaseNm09Private::loadBackend(QString const&, char const*, char const*) () from /lib/libsolidcontrolnm09.so.4
#12 0x44301e3b in Solid::Control::NetworkManagerNm09Private::NetworkManagerNm09Private() () from /lib/libsolidcontrolnm09.so.4
#13 0x44304a57 in Solid::Control::NetworkManagerNm09::networkInterfaces() () from /lib/libsolidcontrolnm09.so.4
#14 0xaa5b91e6 in NetworkManagerApplet::updateInterfaceList() () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#15 0xaa5ba7d4 in NetworkManagerApplet::NetworkManagerApplet(QObject*, QList<QVariant> const&) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#16 0xaa5be7f2 in QObject* KPluginFactory::createInstance<NetworkManagerApplet, QObject>(QWidget*, QObject*, QList<QVariant> const&) () from /usr/lib/kde4/plasma_applet_networkmanagement.so
#17 0x43831f38 in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () from /lib/libkdecore.so.5
#18 0xb74936e2 in Plasma::PluginLoader::loadApplet(QString const&, unsigned int, QList<QVariant> const&) () from /lib/libplasma.so.3
#19 0xb743fde5 in Plasma::Applet::load(QString const&, unsigned int, QList<QVariant> const&) () from /lib/libplasma.so.3
#20 0xb14fa580 in SystemTray::PlasmoidTask::setupApplet(QString const&, int) () from /usr/lib/kde4/plasma_applet_systemtray.so
#21 0xb14fac26 in SystemTray::PlasmoidTask::PlasmoidTask(QString const&, int, QObject*, Plasma::Applet*) () from /usr/lib/kde4/plasma_applet_systemtray.so
#22 0xb14f8d76 in SystemTray::PlasmoidProtocol::addApplet(QString, int, Plasma::Applet*) () from /usr/lib/kde4/plasma_applet_systemtray.so
#23 0xb14f9234 in SystemTray::PlasmoidProtocol::loadFromConfig(Plasma::Applet*) () from /usr/lib/kde4/plasma_applet_systemtray.so
#24 0xb14f03da in SystemTray::Manager::loadApplets(Plasma::Applet*) () from /usr/lib/kde4/plasma_applet_systemtray.so
#25 0xb1502851 in SystemTray::Applet::configChanged() () from /usr/lib/kde4/plasma_applet_systemtray.so
#26 0xb14fffb9 in SystemTray::Applet::constraintsEvent(QFlags<Plasma::Constraint>) () from /usr/lib/kde4/plasma_applet_systemtray.so
#27 0xb74449f9 in Plasma::Applet::flushPendingConstraintsEvents() [clone .part.112] () from /lib/libplasma.so.3
#28 0xb746483a in Plasma::ContainmentPrivate::initApplets() () from /lib/libplasma.so.3
#29 0xb7473198 in Plasma::CoronaPrivate::importLayout(KConfigBase const&, bool) () from /lib/libplasma.so.3
#30 0xb7473c88 in Plasma::Corona::loadLayout(QString const&) () from /lib/libplasma.so.3
#31 0xb7473d5f in Plasma::Corona::initializeLayout(QString const&) () from /lib/libplasma.so.3
#32 0xb77511bc in PlasmaApp::corona(bool) () from /lib/libkdeinit4_plasma-desktop.so
#33 0xb77517fb in PlasmaApp::setupDesktop() () from /lib/libkdeinit4_plasma-desktop.so
#34 0xb77563b8 in PlasmaApp::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.73] () from /lib/libkdeinit4_plasma-desktop.so
#35 0x4cea432b in QMetaCallEvent::placeMetaCall(QObject*) () from /lib/libQtCore.so.4
#36 0x4ceac30b in QObject::event(QEvent*) () from /lib/libQtCore.so.4
#37 0x4ce973bb in QCoreApplication::event(QEvent*) () from /lib/libQtCore.so.4
#38 0x4d6956a0 in QApplication::event(QEvent*) () from /lib/libQtGui.so.4
#39 0x4d690174 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/libQtGui.so.4
#40 0x4d696c89 in QApplication::notify(QObject*, QEvent*) () from /lib/libQtGui.so.4
#41 0x43aedfe5 in KApplication::notify(QObject*, QEvent*) () from /lib/libkdeui.so.5
#42 0x4ce92a3a in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /lib/libQtCore.so.4
#43 0x4ce95d55 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/libQtCore.so.4
#44 0x4ce9627d in QCoreApplication::sendPostedEvents(QObject*, int) () from /lib/libQtCore.so.4
#45 0x4cec338f in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib/libQtCore.so.4
#46 0x4c23e0e6 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#47 0x4c23e498 in g_main_context_iterate.isra.21 () from /lib/libglib-2.0.so.0
#48 0x4c23e559 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#49 0x4cec2b60 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#50 0x4d74127f in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtGui.so.4
#51 0x4ce91444 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#52 0x4ce91781 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/libQtCore.so.4
#53 0x4ce9721f in QCoreApplication::exec() () from /lib/libQtCore.so.4
#54 0x4d68e5c5 in QApplication::exec() () from /lib/libQtGui.so.4
#55 0xb773903d in kdemain () from /lib/libkdeinit4_plasma-desktop.so
#56 0x080487bc in main ()

Reported using DrKonqi