Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-ARCH i686

What I was doing when the application crashed:
plasma this strange behavior, sometimes it closes by itself and not memorize settings of more than one plasma

 -- Backtrace:
Application: Espaço de trabalho do Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb5713700 (LWP 7428))]

Thread 2 (Thread 0xa86f9b70 (LWP 7429)):
#0  0xb7822424 in __kernel_vsyscall ()
#1  0xb75c4e65 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb761e937 in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#3  0xb5e9a562 in ?? () from /usr/lib/libQtNetwork.so.4
#4  0xb761d922 in ?? () from /usr/lib/libQtCore.so.4
#5  0xb75c08ac in start_thread () from /lib/libpthread.so.0
#6  0xb6117a9e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb5713700 (LWP 7428)):
[KCrash Handler]
#6  0xa8aaa11c in AbstractTaskItem::basicPreferredSize() const () from /usr/lib/kde4/plasma_applet_tasks.so
#7  0xa8aa573b in TaskItemLayout::preferredColumns() () from /usr/lib/kde4/plasma_applet_tasks.so
#8  0xa8aa652a in TaskItemLayout::gridLayoutSize() () from /usr/lib/kde4/plasma_applet_tasks.so
#9  0xa8aa65ec in TaskItemLayout::layoutItems() () from /usr/lib/kde4/plasma_applet_tasks.so
#10 0xa8aa6fc9 in TaskItemLayout::insert(int, AbstractTaskItem*) () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0xa8aa71df in TaskItemLayout::addTaskItem(AbstractTaskItem*) () from /usr/lib/kde4/plasma_applet_tasks.so
#12 0xa8ab44b2 in TaskGroupItem::itemAdded(TaskManager::AbstractGroupableItem*) () from /usr/lib/kde4/plasma_applet_tasks.so
#13 0xa8ab4b47 in TaskGroupItem::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kde4/plasma_applet_tasks.so
#14 0xb77218ac in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#15 0xb77224e2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#16 0xa8ae6443 in TaskManager::TaskGroup::itemAdded(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#17 0xa8ae6e9b in TaskManager::TaskGroup::add(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#18 0xa8ad42dc in TaskManager::ProgramGroupingStrategy::handleItem(TaskManager::AbstractGroupableItem*) () from /usr/lib/libtaskmanager.so.4
#19 0xa8ace042 in TaskManager::GroupManagerPrivate::addTask(KSharedPtr<TaskManager::Task>) () from /usr/lib/libtaskmanager.so.4
#20 0xa8acea75 in TaskManager::GroupManagerPrivate::actuallyReloadTasks() () from /usr/lib/libtaskmanager.so.4
#21 0xa8ad039e in TaskManager::GroupManager::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libtaskmanager.so.4
#22 0xb77218ac in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#23 0xb77224e2 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#24 0xb775bba7 in QTimer::timeout() () from /usr/lib/libQtCore.so.4
#25 0xb7726f5e in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/libQtCore.so.4
#26 0xb771ba5f in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#27 0xb63943a4 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#28 0xb639ba8c in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#29 0xb6dd75ca in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#30 0xb770be8b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#31 0xb77397ce in ?? () from /usr/lib/libQtCore.so.4
#32 0xb77368d7 in ?? () from /usr/lib/libQtCore.so.4
#33 0xb5fac328 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb5fafba0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#35 0xb5fafcd3 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb77365f5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0xb6432185 in ?? () from /usr/lib/libQtGui.so.4
#38 0xb770a479 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0xb770a8ca in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#40 0xb770cd3f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#41 0xb6394227 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#42 0xb41fb61d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804de22 in _start ()

Reported using DrKonqi