Forum SQL error when accessing online.php
 

Getting this error in email anytime a user tries to see whose online. I've disabled all plug ins. Didn't work.

Code:
Database error in vBulletin 4.0.1:

Invalid SQL:

SELECT threadid, postid
FROM vb_post
WHERE postid IN (0,313132,160415);

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Friday, February 26th 2010 @ 04:32:53 PM
Error Date : Friday, February 26th 2010 @ 04:36:49 PM
Script : http://www.xxxxxxx.com/forums/online.php
Referrer : http://www.xxxxxxx.com/forums/
IP Address : xx
Username : xx
Classname : vB_Database
MySQL Version :