Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-ARCH x86_64

What I was doing when the application crashed:
I try add Play Wolf (plasmoid for amarok control) to panel and plasma crashed. Play Wolf was build from source.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fcc29e0a750 (LWP 3663))]

Thread 2 (Thread 0x7fcc0c907910 (LWP 3664)):
#0  0x00007fcc295dddd9 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007fcc29848c6b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007fcc25cc8c9c in ?? () from /usr/lib/libQtNetwork.so.4
#3  0x00007fcc29847ba5 in ?? () from /usr/lib/libQtCore.so.4
#4  0x00007fcc295d957a in start_thread () from /lib/libpthread.so.0
#5  0x00007fcc26fa414d in clone () from /lib/libc.so.6
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fcc29e0a750 (LWP 3663)):
[KCrash Handler]
#5  0x00007fcc2993d995 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () from /usr/lib/libQtCore.so.4
#6  0x00007fcc06e4572e in PlayWolf::init() () from /usr/lib/kde4/plasma_applet_playwolf.so
#7  0x00007fcc2132f754 in Plasma::Containment::addApplet(Plasma::Applet*, QPointF const&, bool) () from /usr/lib/libplasma.so.3
#8  0x00007fcc2132f9a7 in Plasma::ContainmentPrivate::addApplet(QString const&, QList<QVariant> const&, QRectF const&, unsigned int, bool) () from /usr/lib/libplasma.so.3
#9  0x00007fcc1ef438ad in Plasma::AppletBrowserWidget::addApplet() () from /usr/lib/libkdeinit4_plasma-desktop.so
#10 0x00007fcc1ef4775c in Plasma::AppletBrowserWidget::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeinit4_plasma-desktop.so
#11 0x00007fcc29941d3c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#12 0x00007fcc1ef49395 in KCategorizedItemsView::doubleClicked(QModelIndex const&) () from /usr/lib/libkdeinit4_plasma-desktop.so
#13 0x00007fcc1ef4a5b1 in KCategorizedItemsView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeinit4_plasma-desktop.so
#14 0x00007fcc29941d3c in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQtCore.so.4
#15 0x00007fcc27b92945 in QAbstractItemView::doubleClicked(QModelIndex const&) () from /usr/lib/libQtGui.so.4
#16 0x00007fcc27bdf8f3 in QTreeView::mouseDoubleClickEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#17 0x00007fcc27717918 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#18 0x00007fcc27a70d26 in QFrame::event(QEvent*) () from /usr/lib/libQtGui.so.4
#19 0x00007fcc27ba303b in QAbstractItemView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#20 0x00007fcc27bda180 in QTreeView::viewportEvent(QEvent*) () from /usr/lib/libQtGui.so.4
#21 0x00007fcc2992bf47 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#22 0x00007fcc276c904c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#23 0x00007fcc276d0191 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007fcc282fc586 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#25 0x00007fcc2992cbfc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#26 0x00007fcc276cfa60 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&) () from /usr/lib/libQtGui.so.4
#27 0x00007fcc27735a04 in ?? () from /usr/lib/libQtGui.so.4
#28 0x00007fcc277346da in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#29 0x00007fcc2775c96c in ?? () from /usr/lib/libQtGui.so.4
#30 0x00007fcc2662edbe in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#31 0x00007fcc26632568 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#32 0x00007fcc26632690 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#33 0x00007fcc29955123 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#34 0x00007fcc2775c14e in ?? () from /usr/lib/libQtGui.so.4
#35 0x00007fcc2992b532 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x00007fcc2992b904 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#37 0x00007fcc2992dab9 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#38 0x00007fcc1ef2528f in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#39 0x0000000000406eae in _start ()

Reported using DrKonqi