.
Thread 3 (process 3121):
#0  0x00007f49fff00bc3 in *__GI___poll (fds=<value optimized out>, 
    nfds=<value optimized out>, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
	resultvar = <value optimized out>
	_a3 = -1
	_a2 = 2
	_a1 = 29173472
	oldtype = 0
	result = <value optimized out>
#1  0x00007f49eada8ccf in ?? () from /usr/lib/libpulse.so.0
No symbol table info available.
#2  0x00007f49ead98d86 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
No symbol table info available.
#3  0x00007f49ead9a659 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
No symbol table info available.
#4  0x00007f49ead9a710 in pa_mainloop_run () from /usr/lib/libpulse.so.0
No symbol table info available.
#5  0x00007f49eada8bdb in ?? () from /usr/lib/libpulse.so.0
No symbol table info available.
#6  0x00007f49eab678d8 in ?? () from /usr/lib/libpulsecommon-0.9.21.so
No symbol table info available.
#7  0x00007f4a0324db14 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#8  0x00007f49fff0d07d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (process 20113):
#0  0x00007f4a03252a39 in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
No symbol table info available.
#1  0x00007f4a03895672 in ?? () from /usr/lib/libgthread-2.0.so.0
No symbol table info available.
#2  0x00007f4a012168c1 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f4a01216a07 in g_async_queue_timed_pop ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f4a01266920 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f4a01264a94 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#6  0x00007f4a0324db14 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#7  0x00007f49fff0d07d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (process 3036):
#0  0x00007f4a01245cd2 in g_logv () from /lib/libglib-2.0.so.0
No symbol table info available.
#1  0x00007f4a012460b3 in g_log () from /lib/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f49efd9f671 in brasero_burn_caps_get_default ()
    at burn-basics.c:285
No locals.
#3  0x00007f49efd9f68f in brasero_burn_library_get_media_capabilities (
    media=1715776) at burn-basics.c:440
	iter = <value optimized out>
	links = <value optimized out>
	retval = <value optimized out>
	self = <value optimized out>
	caps = <value optimized out>
#4  0x00007f49efdd431f in brasero_data_session_is_valid_multi (
    medium=0x21a14e0) at brasero-data-session.c:422
	media = <value optimized out>
	media_status = 36876384
#5  0x00007f49efdd44a5 in brasero_data_session_init (
    object=<value optimized out>) at brasero-data-session.c:515
	medium = (BraseroMedium *) 0x21a14e0
	iter = (GSList *) 0x2332310
	list = (GSList *) 0x2332310
	monitor = <value optimized out>
	priv = (BraseroDataSessionPrivate *) 0x1b3bae0
#6  0x00007f4a0193a398 in g_type_create_instance ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#7  0x00007f4a0191d97c in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#8  0x00007f4a0191e7ed in g_object_newv () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#9  0x00007f4a0191f6dc in g_object_new () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#10 0x00007f49efddd6e2 in brasero_track_data_cfg_init (object=0x2275c30)
    at brasero-track-data-cfg.c:3313
	priv = (BraseroTrackDataCfgPrivate *) 0x2275ca0
#11 0x00007f4a0193a575 in g_type_create_instance ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#12 0x00007f4a0191d97c in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#13 0x00007f4a0191e7ed in g_object_newv () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#14 0x00007f4a0191f6dc in g_object_new () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#15 0x00007f49f00042e5 in write_activate (toplevel=0x1c26310)
    at nautilus-burn-extension.c:268
	track = <value optimized out>
	session = <value optimized out>
	name_options = <value optimized out>
	options = <value optimized out>
#16 0x00007f4a0191819e in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#17 0x00007f4a0192d448 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#18 0x00007f4a0192ead6 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#19 0x00007f4a0192f093 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#20 0x00007f4a0191819e in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#21 0x00007f4a0192d448 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#22 0x00007f4a0192ead6 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#23 0x00007f4a0192f093 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#24 0x00007f4a02a6ce95 in gtk_real_button_released (button=0x7f4a001a2e40)
    at /build/buildd/gtk+2.0-2.19.4/gtk/gtkbutton.c:1723
No locals.
#25 0x00007f4a0191819e in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#26 0x00007f4a0192cde3 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#27 0x00007f4a0192ead6 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#28 0x00007f4a0192f093 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#29 0x00007f4a02a6b6e7 in gtk_button_button_release (
    widget=<value optimized out>, event=<value optimized out>)
    at /build/buildd/gtk+2.0-2.19.4/gtk/gtkbutton.c:1615
No locals.
#30 0x00007f4a02b2fe63 in _gtk_marshal_BOOLEAN__BOXED (closure=0x194e9f0, 
    return_value=0x7fff66f51af0, n_param_values=<value optimized out>, 
    param_values=0x201bca0, invocation_hint=<value optimized out>, 
    marshal_data=0x7f4a02a6b6b0)
    at /build/buildd/gtk+2.0-2.19.4/gtk/gtkmarshalers.c:84
	data1 = (gpointer) 0x215a600
	data2 = (gpointer) 0x1961f20
	v_return = <value optimized out>
	__PRETTY_FUNCTION__ = "_gtk_marshal_BOOLEAN__BOXED"
#31 0x00007f4a0191819e in g_closure_invoke ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#32 0x00007f4a0192d162 in ?? () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#33 0x00007f4a0192e91a in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#34 0x00007f4a0192f093 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
No symbol table info available.
#35 0x00007f4a02c5e22f in gtk_widget_event_internal (widget=0x215a600, 
    event=0x23c4250) at /build/buildd/gtk+2.0-2.19.4/gtk/gtkwidget.c:4941
	signal_num = <value optimized out>
	return_val = 0
#36 0x00007f4a02b26ab4 in IA__gtk_propagate_event (widget=0x215a600, 
    event=0x23c4250) at /build/buildd/gtk+2.0-2.19.4/gtk/gtkmain.c:2447
	tmp = (GtkWidget *) 0x215a600
	handled_event = 27021504
	__PRETTY_FUNCTION__ = "IA__gtk_propagate_event"
#37 0x00007f4a02b27cdb in IA__gtk_main_do_event (event=0x23c4250)
    at /build/buildd/gtk+2.0-2.19.4/gtk/gtkmain.c:1647
	event_widget = (GtkWidget *) 0x215a600
	grab_widget = (GtkWidget *) 0x215a600
	window_group = (GtkWindowGroup *) 0x19c50c0
	rewritten_event = (GdkEvent *) 0x0
	tmp_list = <value optimized out>
	__PRETTY_FUNCTION__ = "IA__gtk_main_do_event"
#38 0x00007f4a0277aacc in gdk_event_dispatch (source=<value optimized out>, 
    callback=<value optimized out>, user_data=<value optimized out>)
    at /build/buildd/gtk+2.0-2.19.4/gdk/x11/gdkevents-x11.c:2372
	display = <value optimized out>
	event = <value optimized out>
#39 0x00007f4a0123b7b0 in g_main_context_dispatch ()
   from /lib/libglib-2.0.so.0
No symbol table info available.
#40 0x00007f4a0123f5e8 in ?? () from /lib/libglib-2.0.so.0
No symbol table info available.
#41 0x00007f4a0123fb2d in g_main_loop_run () from /lib/libglib-2.0.so.0
No symbol table info available.
#42 0x00007f4a02b28207 in IA__gtk_main ()
    at /build/buildd/gtk+2.0-2.19.4/gtk/gtkmain.c:1219
	tmp_list = (GList *) 0x199a4a0
	functions = (GList *) 0x0
	init = (GtkInitFunction *) 0x0
	loop = <value optimized out>
#43 0x0000000000444214 in ?? ()
No symbol table info available.
#44 0x00007f49ffe47c4d in __libc_start_main (main=<value optimized out>, 
    argc=<value optimized out>, ubp_av=<value optimized out>, 
    init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff66f523c8)
    at libc-start.c:226
	result = <value optimized out>
	unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -5298343551408946186, 
        4393296, 140734920729552, 0, 0, 5298007184713040886, 
        5254433390494073846}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 
      0x54c3c0, 0x7fff66f523d8}, data = {prev = 0x0, cleanup = 0x0, 
      canceltype = 5555136}}}
	not_first_call = <value optimized out>
#45 0x0000000000430979 in ?? ()
No symbol table info available.
#46 0x00007fff66f523c8 in ?? ()
No symbol table info available.
#47 0x000000000000001c in ?? ()
No symbol table info available.
#48 0x0000000000000001 in ?? ()
No symbol table info available.
#49 0x00007fff66f53a79 in ?? ()
No symbol table info available.
#50 0x0000000000000000 in ?? ()
No symbol table info available.