Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.61 (KDE 4.3.61 (KDE 4.4 >= 20090717))
Qt Version: 4.5.1
Operating System: Linux 2.6.31-rc4 i686
Distribution: Debian GNU/Linux 5.0.2 (lenny)

What I was doing when the application crashed:
I changed the desktop via desktop plasmaoid from 1 to 3. Plasma died.

 -- Backtrace:
Application: Plasma-Arbeitsfläche (kdeinit4), signal: Segmentation fault
Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
[Current thread is 0 (LWP 6450)]

Thread 2 (Thread 0xa7d30b90 (LWP 7381)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb7d1bfb5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/cmov/libpthread.so.0
#2  0xb7daf862 in QWaitCondition::wait (this=0x8739b40, mutex=0x8739b3c, time=4294967295) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qwaitcondition_unix.cpp:87
#3  0xb769179a in QHostInfoAgent::run (this=0x8739b30) at /home/kde-devel/kdesvn/qt-copy/src/network/kernel/qhostinfo.cpp:260
#4  0xb7daead0 in QThreadPrivate::start (arg=0x8739b30) at /home/kde-devel/kdesvn/qt-copy/src/corelib/thread/qthread_unix.cpp:189
#5  0xb7d184e5 in start_thread () from /lib/i686/cmov/libpthread.so.0
#6  0xb67b821e in clone () from /lib/i686/cmov/libc.so.6

Thread 1 (Thread 0xb6171710 (LWP 6450)):
[KCrash Handler]
#6  0xb705eaea in QGraphicsItem::isWidget (this=0x85a4998) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsitem.cpp:1142
#7  0xb7093a1b in QGraphicsScene::event (this=0x80ce1c0, event=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsscene.cpp:3855
#8  0xb6aba69c in QApplicationPrivate::notify_helper (this=0x80cf6a8, receiver=0x80ce1c0, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4057
#9  0xb6ac2ffe in QApplication::notify (this=0x80c9678, receiver=0x80ce1c0, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:3604
#10 0xb742fc7d in KApplication::notify (this=0x80c9678, receiver=0x80ce1c0, event=0xbfa40ea0) at /home/kde-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:302
#11 0xb7e8f06b in QCoreApplication::notifyInternal (this=0x80c9678, receiver=0x80ce1c0, event=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:606
#12 0xb70a5da5 in QGraphicsView::viewportEvent (this=0x8474478, event=0xbfa40ea0) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:213
#13 0xb6f237c5 in QAbstractScrollAreaFilter::eventFilter (this=0x84a6220, o=0x84739c0, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/widgets/qabstractscrollarea_p.h:100
#14 0xb7e8e2aa in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x80cf6a8, receiver=0x84739c0, event=0xbfa40ea0)
    at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:726
#15 0xb6aba67a in QApplicationPrivate::notify_helper (this=0x80cf6a8, receiver=0x84739c0, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4053
#16 0xb6ac30e2 in QApplication::notify (this=0x80c9678, receiver=0x84739c0, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4022
#17 0xb742fc7d in KApplication::notify (this=0x80c9678, receiver=0x84739c0, event=0xbfa40ea0) at /home/kde-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:302
#18 0xb7e8f06b in QCoreApplication::notifyInternal (this=0x80c9678, receiver=0x84739c0, event=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:606
#19 0xb7ea50ce in QCoreApplication::sendEvent (receiver=0x84739c0, event=0x8108538) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:213
#20 0xb6b0dd24 in QWidget::event (this=0x8474478, event=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qwidget.cpp:7769
#21 0xb6e8ec83 in QFrame::event (this=0x8474478, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/widgets/qframe.cpp:559
#22 0xb6f21e5d in QAbstractScrollArea::event (this=0x8474478, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/widgets/qabstractscrollarea.cpp:918
#23 0xb70a5bd6 in QGraphicsView::event (this=0x8474478, event=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/graphicsview/qgraphicsview.cpp:2818
#24 0xb6aba69c in QApplicationPrivate::notify_helper (this=0x80cf6a8, receiver=0x8474478, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4057
#25 0xb6ac30e2 in QApplication::notify (this=0x80c9678, receiver=0x8474478, e=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication.cpp:4022
#26 0xb742fc7d in KApplication::notify (this=0x80c9678, receiver=0x8474478, event=0xbfa40ea0) at /home/kde-devel/kdesvn/kdelibs/kdeui/kernel/kapplication.cpp:302
#27 0xb7e8f06b in QCoreApplication::notifyInternal (this=0x80c9678, receiver=0x8474478, event=0xbfa40ea0) at /home/kde-devel/kdesvn/qt-copy/src/corelib/kernel/qcoreapplication.cpp:606
#28 0xb6ac1dc6 in QApplication::setActiveWindow (act=0x8474478) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:216
#29 0xb6b23384 in QApplication::x11ProcessEvent (this=0x80c9678, event=0xbfa423cc) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qapplication_x11.cpp:3485
#30 0xb6b4aa02 in x11EventSourceDispatch (s=0x80d2270, callback=0, user_data=0x0) at /home/kde-devel/kdesvn/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:146
#31 0xb6634848 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#32 0xb6637dab in ?? () from /usr/lib/libglib-2.0.so.0
#33 0x080d1698 in ?? ()
#34 0x00000000 in ?? ()

Reported using DrKonqi