[BUG]现在无法删除短消息

一点就出现这个
Query Error: DELETE LOW_PRIORITY mc FROM pw_msgc mc LEFT JOIN pw_msg m ON mc.mid=m.mid LEFT JOIN pw_msglog ml ON mc.mid=ml.mid WHERE m.mid is NULL AND ml.mid is NULL AND mc.mid IN(265645)

The URL Is:
http://www.astost.com/bbs/message.php?action=del&towhere=receivebox&delids=265645

MySQL Server Error:
Not unique table/alias: 'mc' ( 1066 )

You Can Get Help In:
http://www.phpwind.net