.
Thread 3 (process 4654):
#0  0x00007fbf4f2dc86d in _int_malloc () from /lib/libc.so.6
#1  0x00007fbf4f2de8b8 in malloc () from /lib/libc.so.6
#2  0x00007fbf505fcade in IA__g_realloc (mem=0x0, n_bytes=40)
    at /build/buildd/glib2.0-2.19.6/glib/gmem.c:170
No locals.
#3  0x00007fbf50ce1406 in handler_insert (signal_id=241, instance=0x10a5e00, 
    handler=0x10bcf90)
    at /build/buildd/glib2.0-2.19.6/glib/gbsearcharray.h:136
	__PRETTY_FUNCTION__ = "handler_insert"
#4  0x00007fbf50ce1796 in IA__g_signal_connect_data (instance=0x10a5e00, 
    detailed_signal=0x7fbf3ed5df37 "medium-added", 
    c_handler=0x7fbf3ed4f7a0 <brasero_medium_monitor_medium_added_cb>, 
    data=0x11a4840, destroy_data=0, connect_flags=0)
    at /build/buildd/glib2.0-2.19.6/gobject/gsignal.c:2261
	node = (SignalNode *) 0x1114d70
	signal_id = 241
	handler_seq_no = 315
	detail = 0
	itype = 16786944
	__PRETTY_FUNCTION__ = "IA__g_signal_connect_data"
#5  0x00007fbf3ed4f6e9 in brasero_medium_monitor_init (object=0x11a4840)
    at brasero-medium-monitor.c:459
	error = {name = 0x0, message = 0x0, dummy1 = 1, dummy2 = 0, 
  dummy3 = 1, dummy4 = 1, dummy5 = 0, padding1 = 0x7fbf3ed5de9e}
	nb_devices = 1
	i = 1
	ctx = <value optimized out>
	drive = <value optimized out>
	devices = (char **) 0x1114a50
	watch = <value optimized out>
	priv = (BraseroMediumMonitorPrivate *) 0x11a4860
#6  0x00007fbf50cef85a in IA__g_type_create_instance (
    type=<value optimized out>)
    at /build/buildd/glib2.0-2.19.6/gobject/gtype.c:1674
	node = (TypeNode *) 0x109dd10
	instance = (GTypeInstance *) 0x11a4840
	class = (GTypeClass *) 0x10024f0
	i = 1328899776
#7  0x00007fbf50cd2b8b in g_object_constructor (type=140459646974464, 
    n_construct_properties=40, construct_params=0x30)
    at /build/buildd/glib2.0-2.19.6/gobject/gobject.c:1338
	object = <value optimized out>
#8  0x00007fbf50cd3200 in IA__g_object_newv (object_type=17423632, 
    n_parameters=<value optimized out>, parameters=0x0)
    at /build/buildd/glib2.0-2.19.6/gobject/gobject.c:1215
	nqueue = <value optimized out>
	object = <value optimized out>
	class = (GObjectClass *) 0x10024f0
	unref_class = (GObjectClass *) 0x10024f0
	slist = (GSList *) 0x0
	n_total_cparams = 0
	n_cparams = 0
	n_oparams = 0
	n_cvalues = 0
	clist = (GList *) 0x0
	i = 0
	__PRETTY_FUNCTION__ = "IA__g_object_newv"
#9  0x00007fbf50cd3d87 in IA__g_object_new_valist (object_type=17423632, 
    first_property_name=0x0, var_args=0x7fff5b83e2e0)
    at /build/buildd/glib2.0-2.19.6/gobject/gobject.c:1278
	params = <value optimized out>
	name = <value optimized out>
	object = <value optimized out>
	n_params = <value optimized out>
	n_alloced_params = <value optimized out>
	__PRETTY_FUNCTION__ = "IA__g_object_new_valist"
#10 0x00007fbf50cd3ecc in IA__g_object_new (object_type=17423632, 
    first_property_name=0x0)
    at /build/buildd/glib2.0-2.19.6/gobject/gobject.c:1060
	var_args = {{gp_offset = 16, fp_offset = 48, 
    overflow_arg_area = 0x7fff5b83e3d0, reg_save_area = 0x7fff5b83e300}}
	__PRETTY_FUNCTION__ = "IA__g_object_new"
#11 0x00007fbf3ed4ee79 in brasero_medium_monitor_get_default ()
    at brasero-medium-monitor.c:593
No locals.
#12 0x00007fbf3ed4dcdf in brasero_media_library_start ()
    at brasero-media.c:531
No locals.
#13 0x00007fbf3ef69439 in nautilus_module_initialize (module=0x7fbf4f5cfa00)
    at nautilus-burn-extension.c:904
No locals.
#14 0x00000000004f2fe6 in nautilus_module_load (gmodule=0x11a0300)
    at nautilus-module.c:96
No locals.
#15 0x00007fbf50cf0854 in IA__g_type_module_use (module=0x11a0300)
    at /build/buildd/glib2.0-2.19.6/gobject/gtypemodule.c:257
	tmp_list = <value optimized out>
	__PRETTY_FUNCTION__ = "IA__g_type_module_use"
#16 0x00000000004f2d79 in nautilus_module_setup () at nautilus-module.c:173
	initialized = 1
#17 0x0000000000431f75 in nautilus_application_startup (application=0xf98600, 
    kill_shell=<value optimized out>, no_default_window=1, no_desktop=0, 
    browser_window=0, geometry=0x0, urls=0x0) at nautilus-application.c:466
	message = <value optimized out>
#18 0x00000000004420f0 in main (argc=1, argv=0x7fff5b83e8d8)
    at nautilus-main.c:492
	kill_shell = 0
	no_default_window = 1
	browser_window = 0
	no_desktop = 0
	version = 0
	autostart_mode = <value optimized out>
	autostart_id = <value optimized out>
	geometry = (gchar *) 0x0
	remaining = (const gchar **) 0x0
	perform_self_check = 0
	application = <value optimized out>
	context = <value optimized out>
	file = <value optimized out>
	uri = <value optimized out>
	uris = (char **) 0x0
	uris_array = (GPtrArray *) 0x7fff5b83e8d0
	error = (GError *) 0x0
	options = {{long_name = 0x54b35f "check", short_name = 99 'c', 
    flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff5b83e7c8, 
    description = 0x54b3a8 "Perform a quick set of self-check tests.", 
    arg_description = 0x0}, {long_name = 0x54b295 "version", 
    short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, 
    arg_data = 0x7fff5b83e7cc, 
    description = 0x54b3d8 "Show the version of the program.", 
    arg_description = 0x0}, {long_name = 0x54f173 "geometry", 
    short_name = 103 'g', flags = 0, arg = G_OPTION_ARG_STRING, 
    arg_data = 0x7fff5b83e7c0, 
    description = 0x54b400 "Create the initial window with the given geometry.", arg_description = 0x54b29d "GEOMETRY"}, {
    long_name = 0x54b2a6 "no-default-window", short_name = 110 'n', 
    flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fff5b83e7d8, 
    description = 0x54b438 "Only create windows for explicitly specified URIs.", arg_description = 0x0}, {long_name = 0x54b2b8 "no-desktop", 
    short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, 
    arg_data = 0x7fff5b83e7d0, 
    description = 0x54b470 "Do not manage the desktop (ignore the preference set in the preferences dialog).", arg_description = 0x0}, {
    long_name = 0x547d7b "browser", short_name = 0 '\0', flags = 0, 
    arg = G_OPTION_ARG_NONE, arg_data = 0x7fff5b83e7d4, 
    description = 0x54b2c3 "open a browser window.", arg_description = 0x0}, {
    long_name = 0x56c8d1 "quit", short_name = 113 'q', flags = 0, 
    arg = G_OPTION_ARG_NONE, arg_data = 0x7fff5b83e7dc, 
    description = 0x54b2da "Quit Nautilus.", arg_description = 0x0}, {
    long_name = 0x55058f "", short_name = 0 '\0', flags = 0, 
    arg = G_OPTION_ARG_STRING_ARRAY, arg_data = 0x7fff5b83e7b8, 
    description = 0x0, arg_description = 0x54b2e9 "[URI...]"}, {
    long_name = 0x0, short_name = 0 '\0', flags = 0, arg = G_OPTION_ARG_NONE, 
    arg_data = 0x0, description = 0x0, arg_description = 0x0}}
.
Thread 2 (process 4655):
#0  0x00007fbf4f05156d in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007fbf4ee43665 in g_cond_timed_wait_posix_impl (cond=0xfda454, 
    entered_mutex=0x7fbf5087e748, abs_time=<value optimized out>)
    at /build/buildd/glib2.0-2.19.6/gthread/gthread-posix.c:242
	result = <value optimized out>
	end_time = {tv_sec = 1234402798, tv_nsec = 481211000}
	timed_out = <value optimized out>
	__PRETTY_FUNCTION__ = "g_cond_timed_wait_posix_impl"
#2  0x00007fbf505d06bb in g_async_queue_pop_intern_unlocked (queue=0xfcb510, 
    try=0, end_time=0x7fbf488a1fb0)
    at /build/buildd/glib2.0-2.19.6/glib/gasyncqueue.c:365
	retval = <value optimized out>
	__PRETTY_FUNCTION__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007fbf5061f489 in g_thread_pool_thread_proxy (
    data=<value optimized out>)
    at /build/buildd/glib2.0-2.19.6/glib/gthreadpool.c:220
	task = (gpointer) 0x11a9d60
	pool = (GRealThreadPool *) 0xfcb4b0
#4  0x00007fbf5061dec4 in g_thread_create_proxy (data=0xfcc890)
    at /build/buildd/glib2.0-2.19.6/glib/gthread.c:635
	__PRETTY_FUNCTION__ = "g_thread_create_proxy"
#5  0x00007fbf4f04d3ba in start_thread () from /lib/libpthread.so.0
#6  0x00007fbf4f3480ad in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()
.
Thread 1 (process 4656):
#0  brasero_scsi_command_issue_sync (command=0x1026750, 
    buffer=0x7fbf44001970, size=40, error=0x7fbf3eb32d5c) at scsi-sg.c:88
	sense_buffer = '\0' <repeats 18 times>
	transport = {interface_id = 83, dxfer_direction = 0, 
  cmd_len = 0 '\0', mx_sb_len = 0 '\0', iovec_count = 0, dxfer_len = 0, 
  dxferp = 0x7fbf44001970, cmdp = 0x1026750 "\001", sbp = 0x0, timeout = 0, 
  flags = 0, pack_id = 0, usr_ptr = 0x0, status = 0 '\0', 
  masked_status = 0 '\0', msg_status = 0 '\0', sb_len_wr = 0 '\0', 
  host_status = 0, driver_status = 0, resid = 0, duration = 0, info = 0}
#1  0x00007fbf3ed4bcee in brasero_mmc2_get_configuration_feature (
    handle=<value optimized out>, type=BRASERO_SCSI_FEAT_WRT_DVD_LESS, 
    data=0x7fbf3eb32d18, size=0x7fbf3eb32d50, error=0x7fbf3eb32d5c)
    at scsi-get-configuration.c:139
	cdb = (BraseroGetConfigCDB *) 0x1026750
	res = <value optimized out>
	__PRETTY_FUNCTION__ = "brasero_mmc2_get_configuration_feature"
#2  0x00007fbf3ed564db in brasero_medium_init_real (object=0x119ee50, 
    handle=0x1031f00) at brasero-medium.c:998
	i = <value optimized out>
	name = <value optimized out>
	result = 18476656
	priv = (BraseroMediumPrivate *) 0x119ee70
	code = BRASERO_SCSI_TYPE_MISMATCH
	buffer = '\0' <repeats 255 times>
#3  0x00007fbf3ed568a3 in brasero_medium_probe_thread (self=0x119ee50)
    at brasero-medium.c:2922
	counter = 17937024
	path = <value optimized out>
	code = BRASERO_SCSI_ERR_UNKNOWN
	priv = <value optimized out>
	handle = <value optimized out>
#4  0x00007fbf5061dec4 in g_thread_create_proxy (data=0x111b280)
    at /build/buildd/glib2.0-2.19.6/glib/gthread.c:635
	__PRETTY_FUNCTION__ = "g_thread_create_proxy"
#5  0x00007fbf4f04d3ba in start_thread () from /lib/libpthread.so.0
#6  0x00007fbf4f3480ad in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()