# rpm -qf /usr/sbin/gdmsetup
gdm-2.13.0.8-alt1
# gdmsetup
 (Try to change the logo)
*** glibc detected *** double free or corruption (fasttop): 0x083df718 ***
# gdb /usr/sbin/gdmsetup
(gdb) r
Program received signal SIGSEGV, Segmentation fault.
0x48a40135 in malloc_usable_size () from /lib/libc.so.6
(gdb) bt
#0  0x48a40135 in malloc_usable_size () from /lib/libc.so.6
#1  0x48a40f6b in free () from /lib/libc.so.6
#2  0x48a42831 in malloc () from /lib/libc.so.6
#3  0x48a43068 in realloc () from /lib/libc.so.6
#4  0xb79d3fed in g_realloc () from /usr/lib/libglib-2.0.so.0
#5  0xb79b3bb6 in g_array_sort_with_data () from /usr/lib/libglib-2.0.so.0
#6  0xb79b3f7e in g_array_sized_new () from /usr/lib/libglib-2.0.so.0
#7  0xb7e9ce3d in gtk_tree_model_sort_clear_cache ()
   from /usr/lib/libgtk-x11-2.0.so.0
#8  0xb7e9dc03 in gtk_tree_model_sort_convert_child_iter_to_iter ()
   from /usr/lib/libgtk-x11-2.0.so.0
#9  0xb7e94037 in gtk_tree_model_get_iter () from /usr/lib/libgtk-x11-2.0.so.0
#10 0xb7ebbdfe in gtk_tree_view_set_model () from /usr/lib/libgtk-x11-2.0.so.0
#11 0xb7d74e51 in gtk_file_chooser_dialog_new_with_backend ()
   from /usr/lib/libgtk-x11-2.0.so.0
#12 0xb7d75d6e in gtk_file_chooser_dialog_new_with_backend ()
   from /usr/lib/libgtk-x11-2.0.so.0
#13 0xb7a52ca8 in g_cclosure_marshal_VOID__VOID ()
   from /usr/lib/libgobject-2.0.so.0
#14 0xb7a3a7ab in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#15 0xb7a513b8 in g_signal_has_handler_pending ()
   from /usr/lib/libgobject-2.0.so.0
#16 0xb7a522cc in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#17 0xb7a526a6 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#18 0xb7d8b1aa in gtk_file_folder_list_children ()
   from /usr/lib/libgtk-x11-2.0.so.0
#19 0xb7a53c87 in g_io_condition_get_type () from /usr/lib/libgobject-2.0.so.0
#20 0xb7a3a7ab in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#21 0xb7a53e0a in g_io_condition_get_type () from /usr/lib/libgobject-2.0.so.0
#22 0xb79cf8f1 in g_child_watch_add () from /usr/lib/libglib-2.0.so.0
#23 0xb79cc5b7 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0xb79cdf88 in g_main_context_acquire () from /usr/lib/libglib-2.0.so.0
#25 0xb79ce2ba in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#26 0xb7dd51c3 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#27 0x0805fa78 in main ()
(gdb) quit
# rpm -q libgtk+2 glib2
libgtk+2-2.8.12-alt1
glib2-2.9.6-alt1

Я не уверен, что проблема в gdm (GTK тоже обновлялся), но вроде больше никто не
падает.