Index: gnome-session/main.c
===================================================================
--- gnome-session/main.c	(revision 4361)
+++ gnome-session/main.c	(working copy)
@@ -640,7 +642,7 @@ main (int argc, char *argv[])
   /* Read the config option early, so that we know if a11y is set or not */ 
   gconf_client = gsm_get_conf_client ();
   gconf_client_add_dir (gconf_client, GSM_GCONF_CONFIG_PREFIX, GCONF_CLIENT_PRELOAD_ONELEVEL, NULL); 
-  a_t_support = gconf_client_get_bool (gconf_client, ACCESSIBILITY_KEY, NULL);
+  a_t_support = (g_getenv("GNOME_ACCESSIBILITY") == "1") || gconf_client_get_bool (gconf_client, ACCESSIBILITY_KEY, NULL);
 
   if (a_t_support)
     {
