Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.3
Operating System: Linux 2.6.30.9-96.fc11.i686.PAE i686
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
When opening several windows, KDE desktop crashed suddenly.
Then a moment changed to a black background.


 -- Backtrace:
Application: Plasma ワークスペース (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb777a7a0 (LWP 12851))]

Thread 3 (Thread 0x3e2db70 (LWP 12852)):
#0  0x00963416 in __kernel_vsyscall ()
#1  0x008e2fa5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x04830307 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0x04cc2862 in ?? () from /usr/lib/libQtNetwork.so.4
#4  0x0482f2c2 in ?? () from /usr/lib/libQtCore.so.4
#5  0x008de935 in start_thread () from /lib/libpthread.so.0
#6  0x0081394e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xab0b9b70 (LWP 12853)):
#0  0x00aa1f86 in clock_gettime () from /lib/librt.so.1
#1  0x0494b743 in ?? () from /usr/lib/libQtCore.so.4
#2  0x0494b931 in ?? () from /usr/lib/libQtCore.so.4
#3  0x0494baca in ?? () from /usr/lib/libQtCore.so.4
#4  0x04949d60 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00bd2240 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#6  0x00bd2601 in ?? () from /lib/libglib-2.0.so.0
#7  0x00bd2b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#8  0x04949bb7 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#9  0x0491d639 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#10 0x0491da8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#11 0x0482bfc3 in QThread::exec() () from /usr/lib/libQtCore.so.4
#12 0x049000ab in ?? () from /usr/lib/libQtCore.so.4
#13 0x0482f2c2 in ?? () from /usr/lib/libQtCore.so.4
#14 0x008de935 in start_thread () from /lib/libpthread.so.0
#15 0x0081394e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb777a7a0 (LWP 12851)):
[KCrash Handler]
#6  0x41b364aa in QGraphicsLayoutItem::parentLayoutItem() const () from /usr/lib/libQtGui.so.4
#7  0x41b51407 in QGraphicsGridLayout::addItem(QGraphicsLayoutItem*, int, int, int, int, QFlags<Qt::AlignmentFlag>) () from /usr/lib/libQtGui.so.4
#8  0x00f6cb38 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#9  0x00f6d089 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#10 0x00f6d29f in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0x00f7a762 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#12 0x00f7adf7 in ?? () from /usr/lib/kde4/plasma_applet_tasks.so
#13 0x04934dc3 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#14 0x04935a22 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x05596573 in TaskManager::TaskGroup::itemAdded(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#16 0x05596fcb in TaskManager::TaskGroup::add(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#17 0x0557e092 in ?? () from /usr/lib/libtaskmanager.so.4
#18 0x0557ea85 in ?? () from /usr/lib/libtaskmanager.so.4
#19 0x0558040e in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#20 0x04934dc3 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#21 0x04935a22 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#22 0x0496f0a7 in QTimer::timeout() () from /usr/lib/libQtCore.so.4
#23 0x0493a4fe in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/libQtCore.so.4
#24 0x0492eedf in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#25 0x414e48b4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0x414ec029 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#27 0x05f9d7ba in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0x0491f0ab in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#29 0x0494c29e in ?? () from /usr/lib/libQtCore.so.4
#30 0x04949c30 in ?? () from /usr/lib/libQtCore.so.4
#31 0x00bcf308 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#32 0x00bd29e0 in ?? () from /lib/libglib-2.0.so.0
#33 0x00bd2b13 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#34 0x04949b7c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x41583c45 in ?? () from /usr/lib/libQtGui.so.4
#36 0x0491d639 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x0491da8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#38 0x0491ff0f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#39 0x414e4737 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#40 0x05aa041d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#41 0x080486fb in _start ()

Reported using DrKonqi