// Limit topics to what the user has access to.
	if ($auth_as_user) {
		$join = 'INNER JOIN fud30_group_cache g1 ON g1.user_id=2147483647 AND g1.resource_id=f.id
				LEFT JOIN fud30_group_cache g2 ON g2.user_id='. $auth_as_user .' AND g2.resource_id=f.id
				LEFT JOIN fud30_mod mm ON mm.forum_id=t.forum_id AND mm.user_id='. $auth_as_user .' ';
		$lmt  = '(mm.id IS NOT NULL OR (COALESCE(g2.group_cache_opt, g1.group_cache_opt) & 2) > 0)';
	} else {
		$join = 'INNER JOIN fud30_group_cache g1 ON g1.user_id=0 AND g1.resource_id=t.forum_id ';
		$lmt  = '(g1.group_cache_opt & 2) > 0';
	}

// Limit topics to what the user has access to.
        if ($auth_as_user) {
                $join = 'INNER JOIN '. $GLOBALS['DBHOST_TBL_PREFIX'] .'group_cache g1 ON g1.user_id=2147483647 AND g1.resource_id=f.id
                                LEFT JOIN '. $GLOBALS['DBHOST_TBL_PREFIX'] .'group_cache g2 ON g2.user_id='. $auth_as_user .' AND g2.resource_id=f.id
                                LEFT JOIN '. $GLOBALS['DBHOST_TBL_PREFIX'] .'mod mm ON mm.forum_id=t.forum_id AND mm.user_id='. $auth_as_user .' ';
                $lmt  = '(mm.id IS NOT NULL OR (COALESCE(g2.group_cache_opt, g1.group_cache_opt) & 2) > 0)';
        } else {
                $join = 'INNER JOIN '. $GLOBALS['DBHOST_TBL_PREFIX'] .'group_cache g1 ON g1.user_id=0 AND g1.resource_id=t.forum_id ';
                $lmt  = '(g1.group_cache_opt & 2) > 0';
        }