Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-14-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I was searching some amarok playback problems and hence changed the phonon backend for testing purpose as plasma suddenly decided to die.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Aborted
[Current thread is 0 (LWP 3676)]

Thread 2 (Thread 0x7fe257be8950 (LWP 3681)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fe278309d19 in QWaitCondition::wait (this=0x2c433d0, mutex=0x2c433c8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fe27719381c in QHostInfoAgent::run (this=0x2c433b0) at kernel/qhostinfo.cpp:260
#3  0x00007fe278308d35 in QThreadPrivate::start (arg=0x2c433b0) at thread/qthread_unix.cpp:188
#4  0x00007fe2742023ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fe274de6fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe2788da750 (LWP 3676)):
[KCrash Handler]
#5  0x00007fe274d33fb5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#6  0x00007fe274d35bc3 in *__GI_abort () at abort.c:88
#7  0x00007fe278300da5 in qt_message_output (msgType=QtFatalMsg, buf=<value optimized out>) at global/qglobal.cpp:2042
#8  0x00007fe278300eeb in qFatal (msg=<value optimized out>) at global/qglobal.cpp:2241
#9  0x00007fe2512e77b0 in Phonon::Gstreamer::VideoWidget::setupVideoBin (this=0x4490740) at /build/buildd/phonon-4.3.1/gstreamer/videowidget.cpp:80
#10 0x00007fe2512e7ae3 in VideoWidget (this=0x4490740, backend=0x4bfca60, parent=<value optimized out>) at /build/buildd/phonon-4.3.1/gstreamer/videowidget.cpp:58
#11 0x00007fe2512d8077 in Phonon::Gstreamer::Backend::createObject (this=0x4bfca60, c=<value optimized out>, parent=0x3096be0, args=<value optimized out>)
    at /build/buildd/phonon-4.3.1/gstreamer/backend.cpp:133
#12 0x00007fe26e0a8104 in Phonon::Factory::createVideoWidget (parent=0x3096be0) at /build/buildd/phonon-4.3.1/phonon/factory.cpp:326
#13 0x00007fe26e0acec6 in Phonon::VideoWidgetPrivate::createBackendObject (this=0x306f400) at /build/buildd/phonon-4.3.1/phonon/videowidget.cpp:75
#14 0x00007fe26e0a8636 in Phonon::FactoryPrivate::phononBackendChanged (this=0x30953c0) at /build/buildd/phonon-4.3.1/phonon/factory.cpp:281
#15 0x00007fe26e0a8835 in Phonon::FactoryPrivate::qt_metacall (this=0x30953c0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff80903aa0)
    at /build/buildd/phonon-4.3.1/obj-x86_64-linux-gnu/phonon/factory.moc:71
#16 0x00007fe276676453 in QDBusConnectionPrivate::deliverCall (this=0x241d9a0, object=0x30953c0, msg=@0x2f2a568, metaTypes=@0x2f2a570, slotIdx=7) at qdbusintegrator.cpp:891
#17 0x00007fe27667de5f in QDBusCallDeliveryEvent::placeMetaCall (this=0x0, object=0xe5c) at qdbusintegrator_p.h:101
#18 0x00007fe2784025d8 in QObject::event (this=0x30953c0, e=0x2f2a520) at kernel/qobject.cpp:1111
#19 0x00007fe2759bdf4d in QApplicationPrivate::notify_helper (this=0x24253a0, receiver=0x30953c0, e=0x2f2a520) at kernel/qapplication.cpp:4056
#20 0x00007fe2759c618a in QApplication::notify (this=0x23e6520, receiver=0x30953c0, e=0x2f2a520) at kernel/qapplication.cpp:4021
#21 0x00007fe276ad071b in KApplication::notify (this=0x23e6520, receiver=0x30953c0, event=0x2f2a520) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#22 0x00007fe2783f26ac in QCoreApplication::notifyInternal (this=0x23e6520, receiver=0x30953c0, event=0x2f2a520) at kernel/qcoreapplication.cpp:610
#23 0x00007fe2783f331a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x2399320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#24 0x00007fe27841be03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#25 0x00007fe27445120a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0x00007fe2744548e0 in ?? () from /usr/lib/libglib-2.0.so.0
#27 0x00007fe274454a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#28 0x00007fe27841ba8f in QEventDispatcherGlib::processEvents (this=0x2424ed0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#29 0x00007fe275a56bdf in QGuiEventDispatcherGlib::processEvents (this=0xe5c, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#30 0x00007fe2783f0f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -2138029072}) at kernel/qeventloop.cpp:149
#31 0x00007fe2783f1314 in QEventLoop::exec (this=0x7fff80904430, flags={i = -2138028992}) at kernel/qeventloop.cpp:201
#32 0x00007fe2783f35e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#33 0x00007fe26d02c1eb in kdemain (argc=1, argv=0x23999b0) at /build/buildd/kdebase-workspace-4.3.0/plasma/shells/desktop/main.cpp:50
#34 0x0000000000407215 in launch (argc=1, _name=0x23d9958 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x23d9978 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:676
#35 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1168
#36 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1361
#37 0x0000000000408b26 in main (argc=2, argv=0x7fff809052d8, envp=0x7fff809052f0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1788

Reported using DrKonqi