(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb6d23191 in raise () from /lib/tls/libc.so.6
#2  0xb6d24929 in abort () from /lib/tls/libc.so.6
#3  0xb6d5728a in __fsetlocking () from /lib/tls/libc.so.6
#4  0xb6d5d1a7 in malloc_usable_size () from /lib/tls/libc.so.6
#5  0xb6d5dbbb in free () from /lib/tls/libc.so.6
#6  0xb6e43e11 in g_free () from /usr/lib/libglib-2.0.so.0
#7  0xb6e2e351 in g_error_free () from /usr/lib/libglib-2.0.so.0
#8  0x0806012c in thread_data_free (thdata=0xb6e11ff4)
    at workspace-window.c:595
#9  0x080602db in thread_open_connect_finished (thread=0x816ab30, job_id=2,
    thdata=0xbfd0e020) at workspace-window.c:675
#10 0xb7d9830a in idle_catch_threads_end (thread=0x816ab30)
    at gda-threader.c:310
#11 0xb6e3f701 in g_child_watch_add () from /usr/lib/libglib-2.0.so.0
#12 0xb6e3c457 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#13 0xb6e3ddf4 in g_main_context_acquire () from /usr/lib/libglib-2.0.so.0
#14 0xb6e3e11a in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#15 0xb74a3ff3 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#16 0xb7eef729 in gnome_db_main_run (
    init_func=0x8060fc0 <create_new_workspace_window>, user_data=0x6)
    at gnome-db-init.c:122
#17 0x080512a3 in main (argc=1, argv=0xbfd0e434) at main.c:123