MySQL Server has gone away!
 

I had a few hundred of these errors in the past hour, and they seem to be revolving around the same SQL statement:

Database error in vBulletin 3.8.3:
Invalid SQL:
UPDATE session
SET lastactivity = 1247138645, location = '/showthread.php?t=1105', inforum = 35, inthread = 1105, incalendar = 0, badlocation = 0
WHERE sessionhash = '3eff74f8cacd914125274a8762bb895b';
MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Thursday, July 9th 2009 @ 12:24:05 PM
Error Date : Thursday, July 9th 2009 @ 12:26:16 PM
Script :
Referrer :
IP Address :
Username : Unregistered
Classname : vB_Database_MySQLi
MySQL Version :

So, the wait_timeout = 120, and I can't keep going up just becuase of this one statement can I?