diff -r c4d6e9b3b964 -r 376a01d8386d includes/clientside/static/login.js
--- a/includes/clientside/static/login.js	Thu Mar 06 20:47:48 2008 -0500
+++ b/includes/clientside/static/login.js	Thu Mar 06 20:48:20 2008 -0500
@@ -328,7 +328,8 @@
   if ( response.mode == 'error' )
   {
     logindata.mb_object.destroy();
-    new messagebox(MB_ICONSTOP | MB_OK, 'FIXME L10N: There was an error in the login process', 'The following error code came from the server:<br />' + response.error);
+    var error_msg = $lang.get('user_' + ( response.error.toLowerCase() ));
+    new messagebox(MB_ICONSTOP | MB_OK, $lang.get('user_err_login_generic_title'), error_msg);
     return false;
   }
   // Main mode switch