Application that crashed: knotify4
Version of the application: 4.0
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-14-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
After I compile a certain plasmoid, it works, but after rebooting I get a black screen, but it is possible to start programs. Sometimes I also get an error message about kcmshell4.

 -- Backtrace:
Application: KNotify (knotify4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  strlen () at ../sysdeps/x86_64/strlen.S:31
#6  0x00007fea2bbb5116 in *__GI___strdup (s=0x0) at strdup.c:42
#7  0x00007fea23b75b21 in ?? () from /usr/lib/libxine.so.1
#8  0x00007fea23b776f9 in ?? () from /usr/lib/libxine.so.1
#9  0x00007fea23b77a7b in _x_scan_plugins () from /usr/lib/libxine.so.1
#10 0x00007fea23b6ac69 in xine_init () from /usr/lib/libxine.so.1
#11 0x00007fea23dcd4d1 in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#12 0x00007fea23dcd8f5 in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#13 0x00007fea23deb769 in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#14 0x00007fea23debe73 in qt_plugin_instance () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#15 0x00007fea24484392 in Phonon::KdePlatformPlugin::createBackend (this=<value optimized out>, newService=) at ../../../phonon/platform_kde/kdeplatformplugin.cpp:155
#16 0x00007fea2448556b in Phonon::KdePlatformPlugin::createBackend (this=0x159bc70) at ../../../phonon/platform_kde/kdeplatformplugin.cpp:204
#17 0x00007fea2dfc3066 in Phonon::FactoryPrivate::createBackend (this=0x16707b0) at ../3rdparty/phonon/phonon/factory.cpp:118
#18 0x00007fea2dfc4c8f in Phonon::Factory::backend (createWhenNull=<value optimized out>) at ../3rdparty/phonon/phonon/factory.cpp:416
#19 0x00007fea2dfbf7c2 in Phonon::GlobalConfig::audioOutputDeviceListFor (this=<value optimized out>, category=<value optimized out>, override=<value optimized out>)
    at ../3rdparty/phonon/phonon/globalconfig.cpp:159
#20 0x00007fea2dfbfde5 in Phonon::GlobalConfig::audioOutputDeviceFor (this=<value optimized out>, category=<value optimized out>, override=<value optimized out>)
    at ../3rdparty/phonon/phonon/globalconfig.cpp:178
#21 0x00007fea2dfba99a in Phonon::AudioOutputPrivate::init (this=0x1671180, c=<value optimized out>) at ../3rdparty/phonon/phonon/audiooutput.cpp:94
#22 0x00007fea2dfbb658 in AudioOutput (this=0x15ab070, category=Phonon::NotificationCategory, parent=0x0) at ../3rdparty/phonon/phonon/audiooutput.cpp:67
#23 0x000000000040d531 in Player (this=0x15ed8e8) at ../../knotify/notifybysound.cpp:59
#24 PlayerPool::getPlayer (this=0x15ed8e8) at ../../knotify/notifybysound.cpp:99
#25 0x000000000040dc55 in NotifyBySound::notify (this=0x15e1d60, eventId=5, config=<value optimized out>) at ../../knotify/notifybysound.cpp:243
#26 0x0000000000408a13 in KNotify::emitEvent (this=0x7fff0be09af0, e=0x154fd50) at ../../knotify/knotify.cpp:179
#27 0x0000000000408e7d in KNotify::event (this=0x7fff0be09af0, event=<value optimized out>, appname=<value optimized out>, contexts=<value optimized out>, title=<value optimized out>, 
    text=<value optimized out>, image=..., actions=..., timeout=-1, winId=0) at ../../knotify/knotify.cpp:128
#28 0x00000000004092ef in KNotifyAdaptor::event (this=0x15eb5c0, event=..., fromApp=..., contexts=<value optimized out>, title=..., text=<value optimized out>, image=..., actions=..., timeout=-1, 
    winId=0) at ../../knotify/knotify.cpp:236
#29 0x000000000040a72b in KNotifyAdaptor::qt_metacall (this=0x15eb5c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff0be08ef0) at ./knotify.moc:215
#30 0x00007fea2d8b7ad4 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:891
#31 0x00007fea2d8b8cc3 in QDBusConnectionPrivate::activateCall (this=<value optimized out>, object=0x15eb5c0, flags=273, msg=...) at qdbusintegrator.cpp:803
#32 0x00007fea2d8b9547 in QDBusConnectionPrivate::activateObject (this=<value optimized out>, node=..., msg=<value optimized out>, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1347
#33 0x00007fea2d8b97c8 in QDBusActivateObjectEvent::placeMetaCall (this=0x16298e0) at qdbusintegrator.cpp:1464
#34 0x00007fea2d5b00f9 in QObject::event (this=0x7fff0be09af0, e=0x16298e0) at kernel/qobject.cpp:1111
#35 0x00007fea2c7f0efc in QApplicationPrivate::notify_helper (this=0x1556b90, receiver=0x7fff0be09af0, e=0x16298e0) at kernel/qapplication.cpp:4056
#36 0x00007fea2c7f81ce in QApplication::notify (this=0x7fff0be09b20, receiver=0x7fff0be09af0, e=0x16298e0) at kernel/qapplication.cpp:4021
#37 0x00007fea2e405ab6 in KApplication::notify (this=0x7fff0be09b20, receiver=0x7fff0be09af0, event=0x16298e0) at ../../kdeui/kernel/kapplication.cpp:302
#38 0x00007fea2d5a0c2c in QCoreApplication::notifyInternal (this=0x7fff0be09b20, receiver=0x7fff0be09af0, event=0x16298e0) at kernel/qcoreapplication.cpp:610
#39 0x00007fea2d5a180a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x1532230) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x1532230) at kernel/qcoreapplication.cpp:1247
#41 0x00007fea2d5c9533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#42 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#43 0x00007fea29773bbe in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#44 0x00007fea29777588 in ?? () from /lib/libglib-2.0.so.0
#45 0x00007fea297776b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#46 0x00007fea2d5c91a6 in QEventDispatcherGlib::processEvents (this=0x1531a80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#47 0x00007fea2c8854be in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#48 0x00007fea2d59f532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#49 0x00007fea2d59f904 in QEventLoop::exec (this=0x7fff0be09a40, flags=) at kernel/qeventloop.cpp:201
#50 0x00007fea2d5a1ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#51 0x0000000000407f8f in main (argc=<value optimized out>, argv=<value optimized out>) at ../../knotify/main.cpp:73

Reported using DrKonqi