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 2.6.28-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I started kde via kdm and startkde and every start I am getting this.

When I start it manualy getting exactly same dump with this info in console:
# plasma-desktop
QDBusObjectPath: invalid path ""
KCrash: Application 'plasma-desktop' crashing...
sock_file=/home/xtom/.kde/socket-cz982040/kdeinit4__0
xtom@cz982040:~$ QDBusObjectPath: invalid path ""


 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#5  0x0000000000c9d090 in ?? ()
#6  0x00007f9e376d5409 in Solid::Backends::Hal::Processor::instructionSets() const () from /opt/kde4/lib/libsolid.so.4
#7  0x00007f9e3769c759 in Solid::Processor::instructionSets() const () from /opt/kde4/lib/libsolid.so.4
#8  0x00007f9e1b83e3b8 in system_has_SSE2() () from /opt/kde4/lib/kde4/plasma_wallpaper_mandelbrot.so
#9  0x00007f9e1b8365cc in Mandelbrot::Mandelbrot(QObject*, QList<QVariant> const&) () from /opt/kde4/lib/kde4/plasma_wallpaper_mandelbrot.so
#10 0x00007f9e1b83a417 in QObject* KPluginFactory::createInstance<Mandelbrot, QObject>(QWidget*, QObject*, QList<QVariant> const&) () from /opt/kde4/lib/kde4/plasma_wallpaper_mandelbrot.so
#11 0x00007f9e3c16e9ba in KPluginFactory::create(char const*, QWidget*, QObject*, QList<QVariant> const&, QString const&) () from /opt/kde4/lib/libkdecore.so.5
#12 0x00007f9e2f370387 in Plasma::Wallpaper::load(QString const&, QList<QVariant> const&) () from /opt/kde4/lib/libplasma.so.3
#13 0x00007f9e2f2fb628 in Plasma::Containment::setWallpaper(QString const&, QString const&) () from /opt/kde4/lib/libplasma.so.3
#14 0x00007f9e2f2fb8c5 in Plasma::Containment::setDrawWallpaper(bool) () from /opt/kde4/lib/libplasma.so.3
#15 0x00007f9e2f2fdaed in Plasma::Containment::init() () from /opt/kde4/lib/libplasma.so.3
#16 0x00007f9e2f3070c3 in Plasma::Corona::loadLayout(QString const&) () from /opt/kde4/lib/libplasma.so.3
#17 0x00007f9e2f308c82 in Plasma::Corona::initializeLayout(QString const&) () from /opt/kde4/lib/libplasma.so.3
#18 0x00007f9e2b924c7a in PlasmaApp::corona() () from /opt/kde4/lib/libkdeinit4_plasma-desktop.so
#19 0x00007f9e2b924e08 in PlasmaApp::setupDesktop() () from /opt/kde4/lib/libkdeinit4_plasma-desktop.so
#20 0x00007f9e2b92896d in PlasmaApp::qt_metacall(QMetaObject::Call, int, void**) () from /opt/kde4/lib/libkdeinit4_plasma-desktop.so
#21 0x00007f9e3c764b27 in QMetaObject::activate (sender=0x8578e0, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x7fff44c43c20)
    at /usr/src/kde4/qt-copy/src/corelib/kernel/qobject.cpp:3117
#22 0x00007f9e3c76af5f in QSingleShotTimer::timerEvent (this=0x8578e0) at /usr/src/kde4/qt-copy/src/corelib/kernel/qtimer.cpp:298
#23 0x00007f9e3c761273 in QObject::event (this=0x8578e0, e=0x0) at /usr/src/kde4/qt-copy/src/corelib/kernel/qobject.cpp:1082
#24 0x00007f9e39bb802d in QApplicationPrivate::notify_helper (this=0x85db20, receiver=0x8578e0, e=0x7fff44c45240) at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication.cpp:4057
#25 0x00007f9e39bc087a in QApplication::notify (this=0x854a70, receiver=0x8578e0, e=0x7fff44c45240) at /usr/src/kde4/qt-copy/src/gui/kernel/qapplication.cpp:4022
#26 0x00007f9e3abfeffb in KApplication::notify(QObject*, QEvent*) () from /opt/kde4/lib/libkdeui.so.5
#27 0x00007f9e3c75295c in QCoreApplication::notifyInternal (this=0x854a70, receiver=0x8578e0, event=0x7fff44c45240) at /usr/src/kde4/qt-copy/src/corelib/kernel/qcoreapplication.cpp:606
#28 0x00007f9e3c77ae36 in QCoreApplication::sendEvent (this=0x861a30) at ../../include/QtCore/../../../../qt-copy/src/corelib/kernel/qcoreapplication.h:213
#29 QTimerInfoList::activateTimers (this=0x861a30) at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventdispatcher_unix.cpp:572
#30 0x00007f9e3c77790d in timerSourceDispatch (source=<value optimized out>) at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:164
#31 0x00007f9e3863710a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#32 0x00007f9e3863a968 in ?? () from /usr/lib/libglib-2.0.so.0
#33 0x00007f9e3863ab1c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#34 0x00007f9e3c77786f in QEventDispatcherGlib::processEvents (this=0x85d420, flags=<value optimized out>) at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventdispatcher_glib.cpp:324
#35 0x00007f9e39c3dbef in QGuiEventDispatcherGlib::processEvents (this=0x4, flags=<value optimized out>) at /usr/src/kde4/qt-copy/src/gui/kernel/qguieventdispatcher_glib.cpp:202
#36 0x00007f9e3c751332 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventloop.cpp:149
#37 0x00007f9e3c7514c5 in QEventLoop::exec (this=0x7fff44c454f0, flags=...) at /usr/src/kde4/qt-copy/src/corelib/kernel/qeventloop.cpp:196
#38 0x00007f9e3c75353c in QCoreApplication::exec () at /usr/src/kde4/qt-copy/src/corelib/kernel/qcoreapplication.cpp:888
#39 0x00007f9e2b90f7dc in kdemain () from /opt/kde4/lib/libkdeinit4_plasma-desktop.so
#40 0x0000000000407494 in launch(int, char const*, char const*, char const*, int, char const*, bool, char const*, bool, char const*) ()
#41 0x0000000000407c58 in handle_launcher_request(int, char const*) ()
#42 0x00000000004081de in handle_requests(int) ()
#43 0x00000000004088eb in main ()

Reported using DrKonqi