Database error: MySQL has gone away

[woody]

I've had this error a couple times in the past week or two and we are trying to get a handle on what's causing the issue...very short lived, and a F5 refresh brings things back to normal...

if you get this or a similar error, please copy/paste and rely to this thread. Thanks!

Database error in vBulletin 3.8.4:

Invalid SQL:

UPDATE vb3_session
SET lastactivity = 1325173351, location = '/showthread.php?t=326260&page=71', incalendar = 0, badlocation = 0, useragent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_2) AppleWebKit/535.7 (KHTML, like Gecko) Chrome/16.0.912.63 Safari/535.7'
WHERE sessionhash = '3fd96911edeb6f73bd14ace7a55c3c7a';

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Thursday, December 29th 2011 @ 09:42:31 AM
Error Date : Thursday, December 29th 2011 @ 09:42:31 AM