After I upgraded from MariaDB 5.2.10, my Drupal installation caught the below error log when I operated it (The Operation was: added a content to a nodequeue). After I downgraded back to 5.2.10, the problem was gone. The error reads:

PDOException: SQLSTATE[HY000]: General error: 1093 You can't specify target table 'nodequeue_nodes' for update in FROM clause: INSERT INTO

{nodequeue_nodes} (sqid, qid, nid, position, timestamp) VALUES (:sqid, :qid, :nid, IFNULL((SELECT MAX(position)+1 FROM (SELECT * from {nodequeue_nodes}

WHERE sqid = :sqid) as nn), 1), :time); Array ( [:sqid] => 7 [:qid] => 7 [:nid] => 162 [:time] => 1325256693 ) in nodequeue_subqueue_add() (line 1042 of /xxx/modules/nodequeue/nodequeue.module).