Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-ARCH x86_64

What I was doing when the application crashed:
My desktop crash when I opened Amarok, the rest continued to work but the plasma-desktop died, I only use QT4 applications do not use any GTK

 -- Backtrace:
Application: Área de trabajo de Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 1977)]

Thread 2 (Thread 0x7f9965036910 (LWP 1983)):
#0  0x00007f9987e28dd9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f998809834b in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#2  0x00007f998450244c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007f9988097285 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007f9987e2457a in start_thread () from /lib/libpthread.so.0
#5  0x00007f99857de14d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f9988648750 (LWP 1977)):
[KCrash Handler]
#5  0x00007f9967c49cf8 in AbstractTaskItem::basicPreferredSize () from /usr/lib/kde4/plasma_applet_tasks.so
#6  0x00007f9967c46125 in TaskItemLayout::preferredColumns () from /usr/lib/kde4/plasma_applet_tasks.so
#7  0x00007f9967c46e0d in TaskItemLayout::gridLayoutSize () from /usr/lib/kde4/plasma_applet_tasks.so
#8  0x00007f9967c46e9b in TaskItemLayout::layoutItems () from /usr/lib/kde4/plasma_applet_tasks.so
#9  0x00007f9967c4791f in TaskItemLayout::insert () from /usr/lib/kde4/plasma_applet_tasks.so
#10 0x00007f9967c47af0 in TaskItemLayout::addTaskItem () from /usr/lib/kde4/plasma_applet_tasks.so
#11 0x00007f9967c53838 in TaskGroupItem::itemAdded () from /usr/lib/kde4/plasma_applet_tasks.so
#12 0x00007f9967c53e94 in TaskGroupItem::qt_metacall () from /usr/lib/kde4/plasma_applet_tasks.so
#13 0x00007f9988191dec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#14 0x00007f9967e8d28f in TaskManager::TaskGroup::itemAdded () from /usr/lib/libtaskmanager.so.4
#15 0x00007f9967e8db7b in TaskManager::TaskGroup::add () from /usr/lib/libtaskmanager.so.4
#16 0x00007f9967e78412 in TaskManager::GroupManagerPrivate::addStartup () from /usr/lib/libtaskmanager.so.4
#17 0x00007f9967e792ba in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#18 0x00007f9988191dec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#19 0x00007f9967e906a5 in TaskManager::TaskManager::startupAdded () from /usr/lib/libtaskmanager.so.4
#20 0x00007f9967e912d8 in TaskManager::TaskManager::gotNewStartup () from /usr/lib/libtaskmanager.so.4
#21 0x00007f9967e93af0 in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#22 0x00007f9988191dec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#23 0x00007f9986b62e57 in KStartupInfo::gotNewStartup () from /usr/lib/libkdeui.so.5
#24 0x00007f9986b68222 in KStartupInfo::Private::new_startup_info_internal () from /usr/lib/libkdeui.so.5
#25 0x00007f9986b6862d in KStartupInfo::Private::got_startup_info () from /usr/lib/libkdeui.so.5
#26 0x00007f9986b6cb9f in KStartupInfo::Private::got_message () from /usr/lib/libkdeui.so.5
#27 0x00007f9986b6cd62 in KStartupInfo::qt_metacall () from /usr/lib/libkdeui.so.5
#28 0x00007f9988191dec in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#29 0x00007f9986bd7042 in KXMessages::gotMessage () from /usr/lib/libkdeui.so.5
#30 0x00007f9986bd82d9 in KXMessages::x11Event () from /usr/lib/libkdeui.so.5
#31 0x00007f9986b47da6 in KApplication::x11EventFilter () from /usr/lib/libkdeui.so.5
#32 0x00007f997c059624 in PlasmaApp::x11EventFilter () from /usr/lib/libkdeinit4_plasma-desktop.so
#33 0x00007f9985f6ea41 in ?? () from /usr/lib/libQtGui.so.4
#34 0x00007f9985f7f029 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#35 0x00007f9985fa7e6c in ?? () from /usr/lib/libQtGui.so.4
#36 0x00007f9984e68dbe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#37 0x00007f9984e6c568 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#38 0x00007f9984e6c690 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#39 0x00007f99881a51b6 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#40 0x00007f9985fa764e in ?? () from /usr/lib/libQtGui.so.4
#41 0x00007f998817b5f2 in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#42 0x00007f998817b9c4 in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#43 0x00007f998817db79 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#44 0x00007f997c04628f in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#45 0x0000000000406eae in _start ()

Reported using DrKonqi