Here's the error report.

Code:
Application: Plasma Desktop Shell (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f0df3f0d760 (LWP 2712))]

Thread 6 (Thread 0x7f0dcfce4700 (LWP 2878)):
#0  0x00007f0dee36c0d7 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#1  0x00007f0dee36cab2 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f0dee36cf59 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f0df2b89576 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#4  0x00007f0df2b5da22 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#5  0x00007f0df2b5dc1f in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#6  0x00007f0df2a755df in QThread::exec() () from /usr/lib64/libQtCore.so.4
#7  0x00007f0df2b40aef in ?? () from /usr/lib64/libQtCore.so.4
#8  0x00007f0df2a78025 in ?? () from /usr/lib64/libQtCore.so.4
#9  0x00007f0de3ba62da in ?? () from /usr/X11R6/lib64/libGL.so.1
#10 0x00007f0df27e7f05 in start_thread () from /lib64/libpthread.so.0
#11 0x00007f0df158053d in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f0dcd174700 (LWP 28976)):
#0  0x00007f0df27ebe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0df2a784bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f0de68a2104 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007f0de68a46ab in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f0de68a356f in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f0de68a35fb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f0df2a78025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f0de3ba62da in ?? () from /usr/X11R6/lib64/libGL.so.1
#8  0x00007f0df27e7f05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f0df158053d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f0dce5dc700 (LWP 28977)):
#0  0x00007f0df27ebe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0df2a784bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f0de68a2104 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007f0de68a46ab in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f0de68a356f in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f0de68a35fb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f0df2a78025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f0de3ba62da in ?? () from /usr/X11R6/lib64/libGL.so.1
#8  0x00007f0df27e7f05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f0df158053d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f0dbdb89700 (LWP 28978)):
#0  0x00007f0df27ebe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0df2a784bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f0de68a2104 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007f0de68a46ab in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f0de68a356f in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f0de68a35fb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f0df2a78025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f0de3ba62da in ?? () from /usr/X11R6/lib64/libGL.so.1
#8  0x00007f0df27e7f05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f0df158053d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f0dbd388700 (LWP 28979)):
#0  0x00007f0df27ebe6c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f0df2a784bb in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib64/libQtCore.so.4
#2  0x00007f0de68a2104 in ?? () from /usr/lib64/libthreadweaver.so.4
#3  0x00007f0de68a46ab in ?? () from /usr/lib64/libthreadweaver.so.4
#4  0x00007f0de68a356f in ?? () from /usr/lib64/libthreadweaver.so.4
#5  0x00007f0de68a35fb in ThreadWeaver::Thread::run() () from /usr/lib64/libthreadweaver.so.4
#6  0x00007f0df2a78025 in ?? () from /usr/lib64/libQtCore.so.4
#7  0x00007f0de3ba62da in ?? () from /usr/X11R6/lib64/libGL.so.1
#8  0x00007f0df27e7f05 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f0df158053d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f0df3f0d760 (LWP 2712)):
[KCrash Handler]
#6  0x0000000000ad5a60 in ?? ()
#7  0x00007f0dd8a9ccc6 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#8  0x00007f0dd8a9cd79 in ?? () from /usr/lib64/kde4/plasma_applet_tasks.so
#9  0x00007f0df2b75178 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#10 0x00007f0df232a31b in QGraphicsWidget::event(QEvent*) () from /usr/lib64/libQtGui.so.4
#11 0x00007f0df1d10c34 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#12 0x00007f0df1d15ac1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQtGui.so.4
#13 0x00007f0df38f0e36 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#14 0x00007f0df2b5e81c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#15 0x00007f0df2b61bf8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#16 0x00007f0df2b61e1e in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#17 0x00007f0ddf961773 in kdemain () from /usr/lib64/libkdeinit4_plasma-desktop.so
#18 0x0000000000408897 in _start ()