(gdb) bt full
#0  0x0812df2d in gtk_stext_insert (text=0x84f2e50, font=0x0, fore=0x0, 
    back=0x0, chars=0xb <Address 0xb out of bounds>, nchars=-1)
    at gtkstext.c:1043
        nchars = 11
        editable = (GtkEditable *) 0x84f2e50
        frozen = 0
        new_line_count = 1
        old_height = 0
        i = 139406928
        numwcs = 11
#1  0x08096449 in compose_insert_sig (compose=0x84d6250) at compose.c:1849
        compose = (Compose *) 0x84d6250
        account = (PrefsAccount *) 0x82b1480
        sigfile = (gchar *) 0x84fe858 "/home/adam/.signature/adam_at_vbfx"
#2  0x080945ce in compose_generic_reply (msginfo=0x82b1480, quote=1, to_all=0, 
    to_ml=1, to_sender=0, followup_and_reply_to=0, body=0x0) at compose.c:880
        msginfo = (MsgInfo *) 0x82b1480
        compose = (Compose *) 0x84d6250
        account = (PrefsAccount *) 0x82758a0
        reply_account = (PrefsAccount *) 0x0
        text = (GtkSText *) 0x84f2e50
#3  0x08094376 in compose_reply (msginfo=0x82b1480, quote=1, to_all=0, 
    to_ml=1, to_sender=0, body=0x0) at compose.c:792
No locals.
#4  0x0807caf3 in summary_reply (summaryview=0x8225590, mode=COMPOSE_REPLY)
    at summaryview.c:4173
        sel = (GList *) 0x8279f30
        msginfo = (MsgInfo *) 0x82b1480
        text = (gchar *) 0x0
#5  0x0807edf4 in summary_reply_cb (summaryview=0x8225590, action=0, 
    widget=0x8224dbc) at summaryview.c:4857
No locals.
#6  0x401bc0db in gtk_item_factory_new () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#7  0x401cc0d5 in gtk_marshal_NONE__NONE () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#8  0x401fb91c in gtk_signal_remove_emission_hook ()
   from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#9  0x401fad85 in gtk_signal_set_funcs () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#10 0x401f8e63 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#11 0x4022f9be in gtk_widget_activate () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#12 0x401d4534 in gtk_menu_shell_activate_item () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#13 0x401d37ba in gtk_menu_shell_deactivate () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#14 0x401cbd5f in gtk_marshal_BOOL__POINTER () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#15 0x401fadc3 in gtk_signal_set_funcs () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#16 0x401f8e63 in gtk_signal_emit () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#17 0x4022f87b in gtk_widget_event () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#18 0x401cbca5 in gtk_propagate_event () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#19 0x401cae0e in gtk_main_do_event () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#20 0x40279047 in gdk_wm_protocols_filter () from /usr/lib/libgdk-1.2.so.0
No symbol table info available.
#21 0x402a8258 in g_main_dispatch () from /usr/lib/libglib-1.2.so.0
No symbol table info available.
#22 0x402a8863 in g_main_iterate () from /usr/lib/libglib-1.2.so.0
No symbol table info available.
#23 0x402a89fc in g_main_run () from /usr/lib/libglib-1.2.so.0
No symbol table info available.
#24 0x401ca707 in gtk_main () from /usr/lib/libgtk-1.2.so.0
No symbol table info available.
#25 0x0806aec9 in main (argc=1, argv=0xbffffb54) at main.c:359
        userrc = (gchar *) 0x81e1fa0 ""
        mainwin = (MainWindow *) 0x81e1fa0
        folderview = (FolderView *) 0x821b4c0
#26 0x4045117d in __libc_start_main (main=0x806a850 <main>, argc=1, 
    ubp_av=0xbffffb54, init=0x8066f0c <_init>, fini=0x814c8e0 <_fini>, 
    rtld_fini=0x4000a534 <_dl_fini>, stack_end=0xbffffb4c)
    at ../sysdeps/generic/libc-start.c:129
        ubp_av = (char **) 0xbffffb54
        fini = (void (*)()) 0x4001482c <_dl_debug_mask>
        rtld_fini = (void (*)()) 0xffffffff
        ubp_ev = (char **) 0x0

hopefully this gives you guys enough information, if not I'll go about other
means to get better information.