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 2.6.31-16-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
still bug #221045 but as there is no help coming I am just recalling that I am waiting for a fix ! ; when searching on the net it looks like this bug is a classico as I found reports on it on Intrepid kubuntu.
Thanks

 -- 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  0x00007fa7a7c34116 in *__GI___strdup (s=0x0) at strdup.c:42
#7  0x00007fa79f866b21 in _insert_node (this=0x8b9980, file=0x9388d0, info=0x8f1620) at load_plugins.c:330
#8  _register_plugins_internal (this=0x8b9980, file=0x9388d0, info=0x8f1620) at load_plugins.c:508
#9  0x00007fa79f8686f9 in collect_plugins (this=<value optimized out>, path=<value optimized out>) at load_plugins.c:629
#10 0x00007fa79f868a7b in _x_scan_plugins (this=<value optimized out>) at load_plugins.c:1177
#11 0x00007fa79f85bc69 in xine_init (this=0x8b9980) at xine.c:1709
#12 0x00007fa79fae54d1 in XineEngineData (this=0x8b8e70) at ../../xine/xineengine.cpp:58
#13 0x00007fa79fae58f5 in Phonon::Xine::XineEngine::create (this=0x8c2a18) at ../../xine/xineengine.cpp:83
#14 0x00007fa79fb03769 in Backend (this=0x8c29d0, parent=<value optimized out>) at ../../xine/backend.cpp:77
#15 0x00007fa79fb03e73 in qt_plugin_instance () at ../../xine/backend.cpp:53
#16 0x00007fa7a020f392 in Phonon::KdePlatformPlugin::createBackend (this=<value optimized out>, newService=) at ../../../phonon/platform_kde/kdeplatformplugin.cpp:155
#17 0x00007fa7a021056b in Phonon::KdePlatformPlugin::createBackend (this=0x882a40) at ../../../phonon/platform_kde/kdeplatformplugin.cpp:204
#18 0x00007fa7aa042066 in Phonon::FactoryPrivate::createBackend (this=0x8811f0) at ../3rdparty/phonon/phonon/factory.cpp:118
#19 0x00007fa7aa043c8f in Phonon::Factory::backend (createWhenNull=<value optimized out>) at ../3rdparty/phonon/phonon/factory.cpp:416
#20 0x00007fa7aa03e7c2 in Phonon::GlobalConfig::audioOutputDeviceListFor (this=<value optimized out>, category=<value optimized out>, override=<value optimized out>)
    at ../3rdparty/phonon/phonon/globalconfig.cpp:159
#21 0x00007fa7aa03ede5 in Phonon::GlobalConfig::audioOutputDeviceFor (this=<value optimized out>, category=<value optimized out>, override=<value optimized out>)
    at ../3rdparty/phonon/phonon/globalconfig.cpp:178
#22 0x00007fa7aa03999a in Phonon::AudioOutputPrivate::init (this=0x8819b0, c=<value optimized out>) at ../3rdparty/phonon/phonon/audiooutput.cpp:94
#23 0x00007fa7aa03a658 in AudioOutput (this=0x881980, category=Phonon::NotificationCategory, parent=0x0) at ../3rdparty/phonon/phonon/audiooutput.cpp:67
#24 0x000000000040d531 in Player (this=0x856038) at ../../knotify/notifybysound.cpp:59
#25 PlayerPool::getPlayer (this=0x856038) at ../../knotify/notifybysound.cpp:99
#26 0x000000000040dc55 in NotifyBySound::notify (this=0x849b40, eventId=1, config=<value optimized out>) at ../../knotify/notifybysound.cpp:243
#27 0x0000000000408a13 in KNotify::emitEvent (this=0x7fff2707f200, e=0x83ba40) at ../../knotify/knotify.cpp:179
#28 0x0000000000408e7d in KNotify::event (this=0x7fff2707f200, 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
#29 0x00000000004092ef in KNotifyAdaptor::event (this=0x77e100, event=..., fromApp=..., contexts=<value optimized out>, title=..., text=<value optimized out>, image=..., actions=..., timeout=-1, 
    winId=0) at ../../knotify/knotify.cpp:236
#30 0x000000000040a72b in KNotifyAdaptor::qt_metacall (this=0x77e100, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff2707e600) at ./knotify.moc:215
#31 0x00007fa7a9936ad4 in QDBusConnectionPrivate::deliverCall (this=<value optimized out>, object=<value optimized out>, msg=<value optimized out>, metaTypes=..., slotIdx=<value optimized out>)
    at qdbusintegrator.cpp:891
#32 0x00007fa7a9937c69 in QDBusConnectionPrivate::activateCall (this=<value optimized out>, object=0x77e100, flags=273, msg=...) at qdbusintegrator.cpp:796
#33 0x00007fa7a9938547 in QDBusConnectionPrivate::activateObject (this=<value optimized out>, node=..., msg=<value optimized out>, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1347
#34 0x00007fa7a99387c8 in QDBusActivateObjectEvent::placeMetaCall (this=0x84b4b0) at qdbusintegrator.cpp:1464
#35 0x00007fa7a962f0f9 in QObject::event (this=0x7fff2707f200, e=0x84b4b0) at kernel/qobject.cpp:1111
#36 0x00007fa7a886fefc in QApplicationPrivate::notify_helper (this=0x773ba0, receiver=0x7fff2707f200, e=0x84b4b0) at kernel/qapplication.cpp:4056
#37 0x00007fa7a88771ce in QApplication::notify (this=0x7fff2707f230, receiver=0x7fff2707f200, e=0x84b4b0) at kernel/qapplication.cpp:4021
#38 0x00007fa7aa484ab6 in KApplication::notify (this=0x7fff2707f230, receiver=0x7fff2707f200, event=0x84b4b0) at ../../kdeui/kernel/kapplication.cpp:302
#39 0x00007fa7a961fc2c in QCoreApplication::notifyInternal (this=0x7fff2707f230, receiver=0x7fff2707f200, event=0x84b4b0) at kernel/qcoreapplication.cpp:610
#40 0x00007fa7a962080a in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x749230) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x749230) at kernel/qcoreapplication.cpp:1247
#42 0x00007fa7a9648533 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#43 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:210
#44 0x00007fa7a57f2bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#45 0x00007fa7a57f6598 in ?? () from /lib/libglib-2.0.so.0
#46 0x00007fa7a57f66c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#47 0x00007fa7a96481a6 in QEventDispatcherGlib::processEvents (this=0x748a80, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#48 0x00007fa7a89044be in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#49 0x00007fa7a961e532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#50 0x00007fa7a961e904 in QEventLoop::exec (this=0x7fff2707f150, flags=) at kernel/qeventloop.cpp:201
#51 0x00007fa7a9620ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#52 0x0000000000407f8f in main (argc=<value optimized out>, argv=<value optimized out>) at ../../knotify/main.cpp:73

Reported using DrKonqi