Application: dragon (2.0)
KDE Platform Version: 4.4.5 (KDE 4.4.5)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-34-generic i686
Distribution: Ubuntu 10.04.3 LTS

-- Information about the crash:
I was playing a video that I'd downloaded from YouTube using "Download Youtube Videos V6.0" I'd changed the extension of the file from ".webm" to '.mp4" because I'd never heard of that format and another, higher-res version had downloaded in .mp4. The player window flashed, then disappeared and I was shortly faced with the debug window.

 -- Backtrace:
Application: Dragon Player (dragon), signal: Segmentation fault
[Current thread is 1 (Thread 0xb773d930 (LWP 2591))]

Thread 10 (Thread 0x6575b70 (LWP 2592)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x005ee342 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c43a34 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0046ece7 in metronom_sync_loop (this=0x96a59d0) at metronom.c:851
#4  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 9 (Thread 0xb5b37b70 (LWP 2593)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x00c2f971 in select () from /lib/tls/i686/cmov/libc.so.6
#2  0x004985cc in xine_usec_sleep (usec=1000) at utils.c:481
#3  0x0047c405 in video_out_loop (this_gen=0x96ac4b8) at video_out.c:1246
#4  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 8 (Thread 0xb5336b70 (LWP 2594)):
[KCrash Handler]
#6  xine_event_dispose_queue (queue=0x0) at events.c:133
#7  0x05910076 in open_plugin (class_gen=0x9cd8a38, stream=0xaef01868, input=0xaef311d0) at demux_matroska.c:2986
#8  0x00477a48 in probe_demux (stream=0xaef01868, method1=<value optimized out>, method2=2, input=0xaef311d0) at load_plugins.c:1328
#9  0x0046cc6f in open_internal (stream=0xaef01868, mrl=0x9efb108 "file:///home/dotter/360p%20152%20kbit%20Halloween%20Light%20Show%202011%20-%20Party%20Rock%20A.mp4") at xine.c:1223
#10 xine_open (stream=0xaef01868, mrl=0x9efb108 "file:///home/dotter/360p%20152%20kbit%20Halloween%20Light%20Show%202011%20-%20Party%20Rock%20A.mp4") at xine.c:1298
#11 0x01f17256 in Phonon::Xine::XineStream::xineOpen (this=0x9ac0880, newstate=Phonon::StoppedState) at ../../xine/xinestream.cpp:262
#12 0x01f1c005 in Phonon::Xine::XineStream::event (this=0x9ac0880, ev=0x94ae750) at ../../xine/xinestream.cpp:1261
#13 0x012e84dc in QApplicationPrivate::notify_helper (this=0x9470e38, receiver=0x9ac0880, e=0x94ae750) at kernel/qapplication.cpp:4300
#14 0x012ef05e in QApplication::notify (this=0xbf9f4054, receiver=0x9ac0880, e=0x94ae750) at kernel/qapplication.cpp:3704
#15 0x0080b40a in KApplication::notify (this=0xbf9f4054, receiver=0x9ac0880, event=0x94ae750) at ../../kdeui/kernel/kapplication.cpp:302
#16 0x0109da3b in QCoreApplication::notifyInternal (this=0xbf9f4054, receiver=0x9ac0880, event=0x94ae750) at kernel/qcoreapplication.cpp:704
#17 0x010a0473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x9abcf10) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#18 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9abcf10) at kernel/qcoreapplication.cpp:1345
#19 0x010a05dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#20 0x010c9adf in QCoreApplication::sendPostedEvents (s=0x9abab58) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#21 postEventSourceDispatch (s=0x9abab58) at kernel/qeventdispatcher_glib.cpp:276
#22 0x01d925e5 in g_main_dispatch (context=0x9ac4978) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:1960
#23 IA__g_main_context_dispatch (context=0x9ac4978) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2513
#24 0x01d962d8 in g_main_context_iterate (context=0x9ac4978, block=<value optimized out>, dispatch=1, self=0x9abae30) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2591
#25 0x01d964b8 in IA__g_main_context_iteration (context=0x9ac4978, may_block=1) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2654
#26 0x010c95d5 in QEventDispatcherGlib::processEvents (this=0x9ac31d8, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#27 0x0109c059 in QEventLoop::processEvents (this=0xb5336280, flags=) at kernel/qeventloop.cpp:149
#28 0x0109c4aa in QEventLoop::exec (this=0xb5336280, flags=...) at kernel/qeventloop.cpp:201
#29 0x00f985a8 in QThread::exec (this=0x954b4c8) at thread/qthread.cpp:487
#30 0x01f0d96a in Phonon::Xine::XineThread::run (this=0x954b4c8) at ../../xine/xinethread.cpp:143
#31 0x00f9b32e in QThreadPrivate::start (arg=0x954b4c8) at thread/qthread_unix.cpp:248
#32 0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#33 0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 7 (Thread 0xb4b35b70 (LWP 2597)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x00c28b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x02d36a8f in my_snd_mixer_wait (data=0x9aca6c0) at audio_alsa_out.c:150
#3  ao_alsa_handle_event_thread (data=0x9aca6c0) at audio_alsa_out.c:166
#4  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 6 (Thread 0xb4334b70 (LWP 2598)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x005ee015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c439dd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x0047f9ee in fifo_peek_int (this_gen=0x9ae1108) at audio_out.c:348
#4  fifo_peek (this_gen=0x9ae1108) at audio_out.c:388
#5  ao_loop (this_gen=0x9ae1108) at audio_out.c:1015
#6  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 5 (Thread 0xb2b85b70 (LWP 2599)):
#0  0x010c99f1 in socketNotifierSourceCheck (source=0x9c86a88) at kernel/qeventdispatcher_glib.cpp:79
#1  0x01d95799 in IA__g_main_context_check (context=0x9cbfa60, max_priority=2147483647, fds=0x9cd2bf8, n_fds=1) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2469
#2  0x01d960ce in g_main_context_iterate (context=0x9cbfa60, block=<value optimized out>, dispatch=1, self=0x9cd40e0) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2588
#3  0x01d964b8 in IA__g_main_context_iteration (context=0x9cbfa60, may_block=1) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2654
#4  0x010c960f in QEventDispatcherGlib::processEvents (this=0x9cc4e00, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#5  0x0109c059 in QEventLoop::processEvents (this=0xb2b85290, flags=) at kernel/qeventloop.cpp:149
#6  0x0109c4aa in QEventLoop::exec (this=0xb2b85290, flags=...) at kernel/qeventloop.cpp:201
#7  0x00f985a8 in QThread::exec (this=0x9cc7c78) at thread/qthread.cpp:487
#8  0x0107bc1b in QInotifyFileSystemWatcherEngine::run (this=0x9cc7c78) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00f9b32e in QThreadPrivate::start (arg=0x9cc7c78) at thread/qthread_unix.cpp:248
#10 0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 4 (Thread 0xb1f0fb70 (LWP 2609)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x005ee015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c439dd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x004722aa in fifo_buffer_get (fifo=0xaef00e80) at buffer.c:230
#4  0x0047812e in video_decoder_loop (stream_gen=0xaef01868) at video_decoder.c:130
#5  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread 0xb1541b70 (LWP 2610)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x005ee015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c439dd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x004722aa in fifo_buffer_get (fifo=0xaef13698) at buffer.c:230
#4  0x0047913e in audio_decoder_loop (stream_gen=0xaef01868) at audio_decoder.c:66
#5  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb0d40b70 (LWP 2611)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x005ee015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c439dd in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x004829da in xine_event_wait (queue_gen=0xaef30f90) at events.c:56
#4  listener_loop (queue_gen=0xaef30f90) at events.c:214
#5  0x005e996e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#6  0x00c36a4e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb773d930 (LWP 2591)):
#0  0x00a72422 in __kernel_vsyscall ()
#1  0x00c28b86 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0x01e3fd60 in ?? () from /usr/lib/libxcb.so.1
#3  0x01e402cb in ?? () from /usr/lib/libxcb.so.1
#4  0x01e40667 in xcb_writev () from /usr/lib/libxcb.so.1
#5  0x02455d79 in _XSend () from /usr/lib/libX11.so.6
#6  0x02455f10 in _XReply () from /usr/lib/libX11.so.6
#7  0x0244354d in XQueryPointer () from /usr/lib/libX11.so.6
#8  0x013867f0 in QCursor::pos () at kernel/qcursor_x11.cpp:155
#9  0x01308aa4 in QMouseEvent (this=0xbf9f2868, type=QEvent::MouseButtonRelease, position=..., button=Qt::LeftButton, buttons=..., modifiers=...) at kernel/qevent.cpp:168
#10 0x003ca76f in Phonon::SeekSliderPrivate::_k_currentSourceChanged (this=0x9afb928) at ../3rdparty/phonon/phonon/seekslider.cpp:148
#11 0x003cab9e in Phonon::SeekSlider::qt_metacall (this=0x9afb030, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbf9f29c8) at .moc/release-shared/moc_seekslider.cpp:107
#12 0x010a2c9a in QMetaObject::metacall (object=0x9afb030, cl=QMetaObject::ReadProperty, idx=36, argv=0xbf9f29c8) at kernel/qmetaobject.cpp:237
#13 0x010b13d5 in QMetaObject::activate (sender=0x9abac10, m=0x3e4448, local_signal_index=7, argv=0xbf9f29c8) at kernel/qobject.cpp:3293
#14 0x003be563 in Phonon::MediaObject::currentSourceChanged (this=0x9abac10, _t1=...) at .moc/release-shared/moc_mediaobject.cpp:234
#15 0x003be9c7 in Phonon::MediaObjectPrivate::_k_currentSourceChanged (this=0x9abcfd0, source=...) at ../3rdparty/phonon/phonon/mediaobject.cpp:446
#16 0x003c04bd in Phonon::MediaObject::qt_metacall (this=0x9abac10, _c=QMetaObject::InvokeMetaMethod, _id=22, _a=0xbf9f2b38) at .moc/release-shared/moc_mediaobject.cpp:144
#17 0x010a2c9a in QMetaObject::metacall (object=0x9abac10, cl=QMetaObject::ReadProperty, idx=26, argv=0xbf9f2b38) at kernel/qmetaobject.cpp:237
#18 0x010b13d5 in QMetaObject::activate (sender=0x9aba9f8, m=0x1f5ce60, local_signal_index=4, argv=0xbf9f2b38) at kernel/qobject.cpp:3293
#19 0x01f2b763 in Phonon::Xine::MediaObject::currentSourceChanged (this=0x9aba9f8, _t1=...) at ./mediaobject.moc:215
#20 0x01f2da2c in Phonon::Xine::MediaObject::setSourceInternal (this=0x9aba9f8, source=..., how=Phonon::Xine::MediaObject::HardSwitch) at ../../xine/mediaobject.cpp:426
#21 0x01f2e250 in Phonon::Xine::MediaObject::setSource (this=0x9aba9f8, source=...) at ../../xine/mediaobject.cpp:317
#22 0x003bf855 in Phonon::MediaObject::setCurrentSource (this=0x9abac10, newSource=...) at ../3rdparty/phonon/phonon/mediaobject.cpp:260
#23 0x0805d1d6 in Dragon::VideoWindow::load (this=0x955f940, url=...) at ../../../../dragonplayer/src/app/videoWindow.cpp:208
#24 0x0806c485 in Dragon::MainWindow::load (this=0x95197c0, url=...) at ../../../../dragonplayer/src/app/mainWindow.cpp:585
#25 0x0806c867 in Dragon::MainWindow::openFileDialog (this=0x95197c0) at ../../../../dragonplayer/src/app/mainWindow.cpp:630
#26 0x0806f3d4 in Dragon::MainWindow::qt_metacall (this=0x95197c0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbf9f2f2c) at ./mainWindow.moc:116
#27 0x010a2c9a in QMetaObject::metacall (object=0x95197c0, cl=QMetaObject::ReadProperty, idx=49, argv=0xbf9f2f2c) at kernel/qmetaobject.cpp:237
#28 0x010b13d5 in QMetaObject::activate (sender=0x9521e10, m=0x8075f20, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3293
#29 0x08058a69 in Dragon::LoadView::openFilePressed (this=0x9521e10) at moc_loadView.cpp:95
#30 0x08058b5b in Dragon::LoadView::qt_metacall (this=0x9521e10, _c=QMetaObject::InvokeMetaMethod, _id=28, _a=0xbf9f305c) at moc_loadView.cpp:76
#31 0x010a2c9a in QMetaObject::metacall (object=0x9521e10, cl=QMetaObject::ReadProperty, idx=28, argv=0xbf9f305c) at kernel/qmetaobject.cpp:237
#32 0x010b13d5 in QMetaObject::activate (sender=0x951c138, m=0x1c238c4, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3293
#33 0x01a134b7 in QAbstractButton::released (this=0x951c138) at .moc/release-shared/moc_qabstractbutton.cpp:199
#34 0x016f2989 in QAbstractButtonPrivate::emitReleased (this=0x951dc28) at widgets/qabstractbutton.cpp:574
#35 0x016f3ce5 in QAbstractButtonPrivate::click (this=0x951dc28) at widgets/qabstractbutton.cpp:537
#36 0x016f3fae in QAbstractButton::mouseReleaseEvent (this=0x951c138, e=0xbf9f37c0) at widgets/qabstractbutton.cpp:1121
#37 0x013467f8 in QWidget::event (this=0x951c138, event=0xbf9f37c0) at kernel/qwidget.cpp:7998
#38 0x016f2d4e in QAbstractButton::event (this=0x951c138, e=0xffffffff) at widgets/qabstractbutton.cpp:1080
#39 0x0179d1f2 in QPushButton::event (this=0x951c138, e=0xbf9f37c0) at widgets/qpushbutton.cpp:679
#40 0x012e84dc in QApplicationPrivate::notify_helper (this=0x9470e38, receiver=0x951c138, e=0xbf9f37c0) at kernel/qapplication.cpp:4300
#41 0x012ef9f7 in QApplication::notify (this=0xbf9f4054, receiver=0x951c138, e=0xbf9f37c0) at kernel/qapplication.cpp:3865
#42 0x0080b40a in KApplication::notify (this=0xbf9f4054, receiver=0x951c138, event=0xbf9f37c0) at ../../kdeui/kernel/kapplication.cpp:302
#43 0x0109da3b in QCoreApplication::notifyInternal (this=0xbf9f4054, receiver=0x951c138, event=0xbf9f37c0) at kernel/qcoreapplication.cpp:704
#44 0x012ee952 in QCoreApplication::sendEvent (receiver=0x951c138, event=0xbf9f37c0, alienWidget=0x0, nativeWidget=0x951c138, buttonDown=0x1c2c058, lastMouseReceiver=..., spontaneous=true)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#45 QApplicationPrivate::sendMouseEvent (receiver=0x951c138, event=0xbf9f37c0, alienWidget=0x0, nativeWidget=0x951c138, buttonDown=0x1c2c058, lastMouseReceiver=..., spontaneous=true)
    at kernel/qapplication.cpp:2965
#46 0x0137a088 in QETWidget::translateMouseEvent (this=0x951c138, event=0xbf9f3cdc) at kernel/qapplication_x11.cpp:4368
#47 0x01379511 in QApplication::x11ProcessEvent (this=0xbf9f4054, event=0xbf9f3cdc) at kernel/qapplication_x11.cpp:3379
#48 0x013a860a in x11EventSourceDispatch (s=0x94740a8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#49 0x01d925e5 in g_main_dispatch (context=0x9473290) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:1960
#50 IA__g_main_context_dispatch (context=0x9473290) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2513
#51 0x01d962d8 in g_main_context_iterate (context=0x9473290, block=<value optimized out>, dispatch=1, self=0x94710a8) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2591
#52 0x01d964b8 in IA__g_main_context_iteration (context=0x9473290, may_block=1) at /build/buildd/glib2.0-2.24.1/glib/gmain.c:2654
#53 0x010c95d5 in QEventDispatcherGlib::processEvents (this=0x945cb60, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#54 0x013a8135 in QGuiEventDispatcherGlib::processEvents (this=0x945cb60, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#55 0x0109c059 in QEventLoop::processEvents (this=0xbf9f3fd4, flags=) at kernel/qeventloop.cpp:149
#56 0x0109c4aa in QEventLoop::exec (this=0xbf9f3fd4, flags=...) at kernel/qeventloop.cpp:201
#57 0x010a069f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#58 0x012e8577 in QApplication::exec () at kernel/qapplication.cpp:3579
#59 0x080678e0 in main (argc=1, argv=0xbf9f41c4) at ../../../../dragonplayer/src/app/main.cpp:57

Reported using DrKonqi