Created attachment 36130 [details]
Backtrace of the crash with all debugging symbols

Alex, please paste backtraces in line or at least set them to text file type, it shows as a binary.

Application: Amarok (amarok), signal: Segmentation fault
pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
[Current thread is 0 (LWP 1707)]

Thread 8 (Thread 0x7f54ccca2950 (LWP 1708)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:217
#1  0x00007f54d1bb8f91 in metronom_sync_loop (this=0x1b14650) at metronom.c:870
#2  0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f54cb5fb950 (LWP 1709)):
[KCrash Handler]
#4  __pthread_mutex_lock (mutex=0x2c8) at pthread_mutex_lock.c:51
#5  0x00007f54d1bb63e1 in xine_close (stream=0x0) at xine.c:497
#6  0x00007f54d1e1fd29 in Phonon::Xine::XineStream::playbackFinished (this=0x19a5000) at /build/buildd/phonon-4.3.1/xine/xinestream.cpp:792
#7  0x00007f54d1e215a2 in Phonon::Xine::XineStream::event (this=0x19a5000, ev=0x46f4a70) at /build/buildd/phonon-4.3.1/xine/xinestream.cpp:1056
#8  0x00007f54e1f1cf4d in QApplicationPrivate::notify_helper (this=0x19612a0, receiver=0x19a5000, e=0x46f4a70) at kernel/qapplication.cpp:4056
#9  0x00007f54e1f2518a in QApplication::notify (this=0x7fffec329a60, receiver=0x19a5000, e=0x46f4a70) at kernel/qapplication.cpp:4021
#10 0x00007f54e3d1571b in KApplication::notify (this=0x7fffec329a60, receiver=0x19a5000, event=0x46f4a70) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#11 0x00007f54e139e6ac in QCoreApplication::notifyInternal (this=0x7fffec329a60, receiver=0x19a5000, event=0x46f4a70) at kernel/qcoreapplication.cpp:610
#12 0x00007f54e139f31a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x19a47c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#13 0x00007f54e13c7e03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#14 0x00007f54d944d20a in IA__g_main_context_dispatch (context=0x19a6e20) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#15 0x00007f54d94508e0 in g_main_context_iterate (context=0x19a6e20, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#16 0x00007f54d9450a7c in IA__g_main_context_iteration (context=0x19a6e20, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#17 0x00007f54e13c7a8f in QEventDispatcherGlib::processEvents (this=0x1a5ae30, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#18 0x00007f54e139cf42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -882921584}) at kernel/qeventloop.cpp:149
#19 0x00007f54e139d314 in QEventLoop::exec (this=0x7f54cb5fafd0, flags={i = -882921504}) at kernel/qeventloop.cpp:201
#20 0x00007f54e12b1dc8 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#21 0x00007f54d1e1462c in Phonon::Xine::XineThread::run (this=0x19a4ae0) at /build/buildd/phonon-4.3.1/xine/xinethread.cpp:143
#22 0x00007f54e12b4d35 in QThreadPrivate::start (arg=0x19a4ae0) at thread/qthread_unix.cpp:188
#23 0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#24 0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#25 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f54cabf0950 (LWP 1712)):
#0  0x00007f54e2fccedb in read () from /lib/libpthread.so.0
#1  0x00007f54d220c735 in ?? () from /usr/lib/libasound.so.2
#2  0x00007f54d2207ab8 in snd_hctl_handle_events () from /usr/lib/libasound.so.2
#3  0x00007f54d22116a5 in snd_mixer_handle_events () from /usr/lib/libasound.so.2
#4  0x00007f54cabf59a8 in ao_alsa_handle_event_thread (data=<value optimized out>) at audio_alsa_out.c:175
#5  0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f54ca3ef950 (LWP 1713)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f54d1bca353 in ao_loop (this_gen=<value optimized out>) at audio_out.c:348
#2  0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f54c99eb950 (LWP 1714)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f54d1bca353 in ao_loop (this_gen=<value optimized out>) at audio_out.c:348
#2  0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f54c8c1e950 (LWP 1717)):
#0  0x00007f54e0818742 in select () from /lib/libc.so.6
#1  0x00007f54d1be20a4 in xine_usec_sleep (usec=<value optimized out>) at utils.c:481
#2  0x00007f54d1bc6deb in video_out_loop (this_gen=<value optimized out>) at video_out.c:1246
#3  0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#4  0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f54aada6950 (LWP 18209)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f54d1bca353 in ao_loop (this_gen=<value optimized out>) at audio_out.c:348
#2  0x00007f54e2fc63ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007f54e081ffcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f54e41e7790 (LWP 1707)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f54e12b453b in QMutexPrivate::wait (this=0x19bec00, timeout=-1) at thread/qmutex_unix.cpp:80
#2  0x00007f54e12afe25 in QMutex::lock (this=0x19a5078) at thread/qmutex.cpp:207
#3  0x00007f54d1e19427 in Phonon::Xine::XineStream::closeBlocking (this=0x19a5000) at /build/buildd/phonon-4.3.1/xine/xinestream.cpp:1541
#4  0x00007f54d1e2d076 in ~MediaObject (this=0x19e3c00) at /build/buildd/phonon-4.3.1/xine/mediaobject.cpp:109
#5  0x00007f54dd679ebb in Phonon::MediaNodePrivate::deleteBackendObject (this=0x1a59a10) at /build/buildd/phonon-4.3.1/phonon/medianode.cpp:81
#6  0x00007f54dd688f9d in ~FactoryPrivate (this=0x1a59870) at /build/buildd/phonon-4.3.1/phonon/factory.cpp:193
#7  0x00007f54e07706ed in *__GI_exit (status=1) at exit.c:75
#8  0x00007f54e1f7a6a8 in qt_xio_errhandler () at kernel/qapplication_x11.cpp:707
#9  0x00007f54e3d15138 in KApplication::xioErrhandler (this=0x7fffec329a60, dpy=0x1985fb0) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:408
#10 0x00007f54dfe396e4 in _XIOError () from /usr/lib/libX11.so.6
#11 0x00007f54dfe40a1f in ?? () from /usr/lib/libX11.so.6
#12 0x00007f54dfe41345 in _XEventsQueued () from /usr/lib/libX11.so.6
#13 0x00007f54dfe29ed3 in XEventsQueued () from /usr/lib/libX11.so.6
#14 0x00007f54e1fb5d9c in x11EventSourceCheck (s=0x1964290) at kernel/qguieventdispatcher_glib.cpp:87
#15 0x00007f54d944fed2 in IA__g_main_context_check (context=0x19634c0, max_priority=0, fds=<value optimized out>, n_fds=-1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2323
#16 0x00007f54d94507c9 in g_main_context_iterate (context=0x19634c0, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2445
#17 0x00007f54d9450a7c in IA__g_main_context_iteration (context=0x19634c0, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#18 0x00007f54e13c7a8f in QEventDispatcherGlib::processEvents (this=0x18e47d0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#19 0x00007f54e1fb5bdf in QGuiEventDispatcherGlib::processEvents (this=0x19bec4c, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#20 0x00007f54e139cf42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -332228144}) at kernel/qeventloop.cpp:149
#21 0x00007f54e139d314 in QEventLoop::exec (this=0x7fffec329a10, flags={i = -332228064}) at kernel/qeventloop.cpp:201
#22 0x00007f54e139f5e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#23 0x0000000000533069 in _start ()
261	in ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S

Merging with another report, as the backtrace indicates it's the same bug.

*** This bug has been marked as a duplicate of bug 203645 ***