(gdb) thread apply all bt Thread 1 (Thread -1225844048 (LWP 25004)): #0 0xb73dc5fc in g_type_check_instance_cast () from /usr/lib/libgobject-2.0.so.0 #1 0x0805c6fe in empathy_main_window_show () at empathy-main-window.c:294 #2 0x0805b26f in main (argc=Cannot access memory at address 0x60103 ) at empathy-main.c:195