database error many messages,needed help. (realy need help)

[geevest.com]

i get this error message again :

Database error in vBulletin 3.7.0:

Invalid SQL:

UPDATE session
SET lastactivity = 1213782551, location = '/forum/forumdisplay.php?f=120', inthread = 0, incalendar = 0, badlocation = 0
WHERE sessionhash = '67396536c9a4cb42a379df8ac799ec7b';

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Wednesday, June 18th 2008 @ 05:49:11 AM
Error Date : Wednesday, June 18th 2008 @ 05:49:14 AM
Script : http://www.anakayam.us/forum/forumdisplay.php?f=120
Referrer : http://www.anakayam.us/forum/forumdisplay.php?f=2
IP Address : 125.163.91.150
Username : asbun
Classname : vB_Database
MySQL Version :
==========
Database error in vBulletin :

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
/home/zhazha/public_html/forum/includes/class_core.php on line 311

MySQL Error :
Error Number :
Request Date : Wednesday, June 18th 2008 @ 05:49:17 AM
Error Date : Wednesday, June 18th 2008 @ 05:49:17 AM
Script : http://anakayam.us/forum/archive/index.php/f-91.html
Referrer : http://www.foolfind.com/search/cerit...esama-pria-gay
IP Address : 125.163.7.202
Username :
Classname : vB_Database
MySQL Version :
=============
Database error in vBulletin :

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
/home/zhazha/public_html/forum/includes/class_core.php on line 311

MySQL Error :
Error Number :
Request Date : Wednesday, June 18th 2008 @ 05:49:18 AM
Error Date : Wednesday, June 18th 2008 @ 05:49:18 AM
Script : http://www.anakayam.us/forum/register.php?do=register
Referrer : http://www.anakayam.us/forum/register.php?do=checkdate
IP Address : 125.164.205.207
Username :
Classname : vB_Database
MySQL Version :
==========
Database error in vBulletin 3.7.0:

Invalid SQL:
SELECT COUNT(*) AS total FROM post_thanks WHERE userid = 21753 AND date > 1213696153;

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Wednesday, June 18th 2008 @ 05:49:13 AM
Error Date : Wednesday, June 18th 2008 @ 05:49:14 AM
Script : http://www.anakayam.us/forum/showthread.php?t=5350
Referrer : http://www.anakayam.us/forum/forumdi...=desc&page=125
IP Address : 125.162.57.251
Username : randang_darek
Classname : vB_Database
MySQL Version :
=========
Database error in vBulletin :

mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
/home/zhazha/public_html/forum/includes/class_core.php on line 311

MySQL Error :
Error Number :
Request Date : Wednesday, June 18th 2008 @ 05:49:16 AM
Error Date : Wednesday, June 18th 2008 @ 05:49:16 AM
Script : http://anakayam.us/forum/showthread.php?t=1686&page=2
Referrer : http://anakayam.us/forum/showthread.php?t=1686
IP Address : 210.245.52.35
Username :
Classname : vB_Database
MySQL Version :
=========

and my host support say : its because my vbulletin script.not my host.
what should i do to fixed this?

--------------- Added [DATE]1213783750[/DATE] at [TIME]1213783750[/TIME] ---------------

my support say like this :

Hello,

It appears we were disconnected from our phone call.

Everything is running on your server. The error messages are normal and
indications that the server is continuing to run even though it is being taxed
severely by the software.

Thank you, I am still monitoring it.

but problem never solved.