Hi,
Xoops version 2.0.9.2 xphpbb 1.23b
Having some weird problems with occaisional whole page error messages (which I should have copied but panicked & refreshed the page instead) most of the error said unable to read moderator details or something similar. Today someone managed to register twice with the same username & email address, and people are saying that the auto login isn't working today.

Nothing in MySQL debug, php debug reveals:

Notice [PHP]: Undefined index: 1 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 2 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 3 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 16 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 10 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 17 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 4 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 8 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 15 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 21 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 5 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 22 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 6 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 24 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 7 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 25 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 9 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 26 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 12 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 23 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 20 in file modules/pbboard/includes/auth.php line 299
Notice [PHP]: Undefined index: 27 in file modules/pbboard/includes/auth.php line 299

This is line 299 in auth.php

$auth_user[$f_forum_id]['auth_mod'] = ( $userdata['session_logged_in'] ) ? auth_check_user(AUTH_MOD, 'auth_mod', $u_access[$f_forum_id], $is_admin) : 0;