Version:            (using Devel)
Compiler:          g++ 4.1.3 
OS:                Linux
Installed from:    Compiled sources

I was adding new plasmoids, such as binary clock, system network, to the desktop containment and moving them to the panel. Then i moved some of the palsmoids back from the panel to the desktop and plasma crashed. bt below:

Application: Plasma Workspace (plasma), signal SIGSEGV
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
[New Thread -1265600800 (LWP 2076)]
[New Thread -1488241776 (LWP 2138)]
[New Thread -1473393776 (LWP 2082)]
[New Thread -1464792176 (LWP 2081)]
[Current thread is 0 (LWP 2076)]

Thread 4 (Thread -1464792176 (LWP 2081)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb6736676 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6799cc6 in QWaitCondition::wait (this=0x8337390, mutex=0x833738c, time=4294967295) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qwaitcondition_unix.cpp:82
#3  0xb795283d in QHostInfoAgent::run (this=0x8337380) at /home/kde-devel/kdesvn/qt-copy/src/network/kernel/qhostinfo.cpp:241
#4  0xb67992f3 in QThreadPrivate::start (arg=0x8337380) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:185
#5  0xb673246b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0xb65936de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread -1473393776 (LWP 2082)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb658c2a1 in select () from /lib/tls/i686/cmov/libc.so.6
#2  0xb6856adf in QProcessManager::run (this=0x80939e8) at /home/kde-devel/kdesvn/qt-copy/src/corelib/io/qprocess_unix.cpp:301
#3  0xb67992f3 in QThreadPrivate::start (arg=0x80939e8) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:185
#4  0xb673246b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb65936de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread -1488241776 (LWP 2138)):
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb6736676 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6799cc6 in QWaitCondition::wait (this=0x82ae0c8, mutex=0x82ae0c4, time=4294967295) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qwaitcondition_unix.cpp:82
#3  0xa92e3526 in RenderThread::run (this=0x82ae0bc) at /home/kde-devel/kdesvn/kdebase/workspace/plasma/wallpapers/image/renderthread.cpp:91
#4  0xb67992f3 in QThreadPrivate::start (arg=0x82ae0bc) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:185
#5  0xb673246b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0xb65936de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread -1265600800 (LWP 2076)):
[KCrash Handler]
#6  0x00000000 in ?? ()
#7  0xb7deda70 in Plasma::ContainmentPrivate::focusApplet (this=0x812c708, applet=0x81fdf00) at /home/kde-devel/kdesvn/kdelibs/plasma/containment.cpp:1373
#8  0xb7dd7e83 in Plasma::Applet::focusInEvent (this=0x81fdf00, event=0xbff95ea8) at /home/kde-devel/kdesvn/kdelibs/plasma/applet.cpp:1333
#9  0xb6fa0f2d in QGraphicsItem::sceneEvent (this=0x81fdf08, event=0xbff95ea8) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsitem.cpp:3965
#10 0xb6fde53f in QGraphicsWidget::sceneEvent (this=0x81fdf00, event=0xbff95ea8) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicswidget.cpp:1011
#11 0xb6fb7894 in QGraphicsScenePrivate::sendEvent (this=0x810bb28, item=0x81fdf08, event=0xbff95ea8) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsscene.cpp:1030
#12 0xb6fbc328 in QGraphicsScene::setFocusItem (this=0x811b6c0, item=0x81fdf08, focusReason=Qt::MouseFocusReason) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsscene.cpp:2623
#13 0xb6fc4df4 in QGraphicsScenePrivate::mousePressEventHandler (this=0x810bb28, mouseEvent=0xbff96454) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsscene.cpp:1142
#14 0xb6fc548b in QGraphicsScene::mousePressEvent (this=0x811b6c0, mouseEvent=0xbff96454) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsscene.cpp:3545
#15 0xb6fc414b in QGraphicsScene::event (this=0x811b6c0, event=0xbff96454) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsscene.cpp:2963
#16 0xb6a9c77f in QApplicationPrivate::notify_helper (this=0x8087a48, receiver=0x811b6c0, e=0xbff96454) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3803
#17 0xb6aa3199 in QApplication::notify (this=0x806c110, receiver=0x811b6c0, e=0xbff96454) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3393
#18 0xb76e290a in KApplication::notify (this=0x806c110, receiver=0x811b6c0, event=0xbff96454) at /home/kde-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:307
#19 0xb6872119 in QCoreApplication::notifyInternal (this=0x806c110, receiver=0x811b6c0, event=0xbff96454) at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:583
#20 0xb6fd74fb in QGraphicsView::mousePressEvent (this=0x8472b88, event=0xbff96a6c) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:209
#21 0xb6ae6f5c in QWidget::event (this=0x8472b88, event=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:7159
#22 0xb6dea943 in QFrame::event (this=0x8472b88, e=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/gui/widgets/qframe.cpp:651
#23 0xb6e704bc in QAbstractScrollArea::viewportEvent (this=0x9f8d5d22, e=0x8f11d30) at /home/kde-devel/kdesvn/qt-copy/src/gui/widgets/qabstractscrollarea.cpp:943
#24 0xb6fd6338 in QGraphicsView::viewportEvent (this=0x8472b88, event=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsview.cpp:2337
#25 0xb6e716a5 in QAbstractScrollAreaFilter::eventFilter (this=0x83f8e38, o=0x83f85d0, e=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/gui/widgets/qabstractscrollarea_p.h:96
#26 0xb68726f9 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x8087a48, receiver=0x83f85d0, event=0xbff96a6c)
    at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:694
#27 0xb6a9c759 in QApplicationPrivate::notify_helper (this=0x8087a48, receiver=0x83f85d0, e=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3799
#28 0xb6aa33d1 in QApplication::notify (this=0x806c110, receiver=0x83f85d0, e=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3528
#29 0xb76e290a in KApplication::notify (this=0x806c110, receiver=0x83f85d0, event=0xbff96a6c) at /home/kde-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:307
#30 0xb6872119 in QCoreApplication::notifyInternal (this=0x806c110, receiver=0x83f85d0, event=0xbff96a6c) at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:583
#31 0xb6aa29d0 in QApplicationPrivate::sendMouseEvent (receiver=0x83f85d0, event=0xbff96a6c, alienWidget=0x83f85d0, nativeWidget=0x8472b88, buttonDown=0xb70dcc70, lastMouseReceiver=@0xb70dcc74)
    at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:212
#32 0xb6afed5c in QETWidget::translateMouseEvent (this=0x8472b88, event=0xbff96f28) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication_x11.cpp:4044
#33 0xb6afe226 in QApplication::x11ProcessEvent (this=0x806c110, event=0xbff96f28) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication_x11.cpp:3040
#34 0xb6b235c4 in x11EventSourceDispatch (s=0x8093270, callback=0, user_data=0x0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:142
#35 0xb5a6c11c in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#36 0xb5a6f55f in ?? () from /usr/lib/libglib-2.0.so.0
#37 0x08089a98 in ?? ()
#38 0x00000000 in ?? ()