Database error in vBulletin 3.8.2 - Help Please

[محروم.كوم]

Hello all

Have an issue, recently upgraded to latest version of VB after nearly two years of not updating and although my forum appears to be running fine I keep getting database error emails. See below:

Database error in vBulletin 3.8.2:

Invalid SQL:

UPDATE session
SET lastactivity = 1241113643, location = '/forum/attachment.php?attachmentid=3551&d=1241111344', incalendar = 0, badlocation = 0, useragent = 'Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8 (.NET CLR 3.5.30729)'
WHERE sessionhash = '8490097cab52de6c7da39202f74561d0';

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Thursday, April 30th 2009 @ 05:47:23 PM
Error Date : Thursday, April 30th 2009 @ 05:47:37 PM
Script : http://www.top-forums.com/forum/attachment.php?attachmentid=3551&d=1241111344
Referrer : http://www.top-forums.com/forum/showthread.php?t=35551
IP Address : 86.130.54.243
Username : sunworshipper
Classname : vB_Database
MySQL Version :


Also:

Database error in vBulletin 3.8.2:

Invalid SQL:

UPDATE datastore SET
data = data - 2,
data = IF(data < 0, 0, data)
WHERE title = 'mailqueue';

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Thursday, April 30th 2009 @ 0424 PM
Error Date : Thursday, April 30th 2009 @ 0439 PM
Script : http://www.top-forums.com/forum/showthread.php?p=297722&posted=1
Referrer : http://www.top-forums.com/forum/newreply.php?do=newreply&p=297717

IP Address : 86.162.106.94
Username : karenc
Classname : vB_Database
MySQL Version :


I am not even sure where to start to fix this, can anyone please help me out?

Thank you

Stuart __DEFINE_LIKE_SHARE__