Help with database errors
 

Every now and then when posting a thread, the process seems to hang and I get the error below. However if i open up another browser the post is posted,

Database error in vBulletin 3.8.2:

Invalid SQL:

SELECT MAX(dateline) AS dateline
FROM post AS post
WHERE threadid = 14109
AND dateline <
AND visible = 1;

MySQL Error : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND visible = 1' at line 5
Error Number : 1064
Request Date : Monday, August 3rd 2009 @ 10:15:51 AM
Error Date : Monday, August 3rd 2009 @ 10:24:26 AM
Script : http://www.mysite.co.uk/newreply.php?do=postreply&t=14109
Referrer : http://www.mysite.co.uk/newreply.php?do=newreply&noquote=1&p=174178
IP Address : 86.143.46.126
Username : jo sope

Classname : vB_Database
MySQL Version : 5.1.30-community