3 Database Errors After 4.1.7 Upgrade

[temsamane]

Please help me with these database errors. What are the reasons of these errors? i think each error has another reason.

error 1:

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/public_html/******.nl/forums/includes/class_core.php on line 314

MySQL Error :
Error Number :
Request Date : Friday, October 21st 2011 @ 10:08:01 AM
Error Date : Friday, October 21st 2011 @ 10:08:01 AM
Script : http://www.******.nl/forums/forum.php
Referrer :
IP Address : support@search.yandex.ru
Username :
Classname : vB_Database
MySQL Version :

error 2:

Database error in vBulletin 4.1.7:

Invalid SQL:

UPDATE vfsession
SET lastactivity = 1319231618, badlocation = 0, useragent = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.1 (KHTML, like Gecko) Chrome/14.0.835.202 Safari/535.1'
WHERE sessionhash = '59f010769923f9ba8f21c462243fc02e';

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Friday, October 21st 2011 @ 02:13:38 PM
Error Date : Friday, October 21st 2011 @ 02:14:08 PM
Script : http://www.******.nl/forums/admincp/...?do=dosendmail
Referrer : http://www.******.nl/forums/admincp/email.php?do=start
IP Address : 87.211.145.19
Username : admin
Classname : vB_Database
MySQL Version :

error 3:

Database error in vBulletin 4.1.7:

Invalid SQL:

SELECT text, languageid, special
FROM vfphrase AS phrase
LEFT JOIN vfphrasetype USING (fieldname)
WHERE phrase.fieldname = 'error'
AND varname = 'registeremail' AND languageid IN (-1, 0, 2);

MySQL Error : MySQL server has gone away
Error Number : 2006
Request Date : Friday, October 21st 2011 @ 03:00:07 PM
Error Date : Friday, October 21st 2011 @ 03:00:23 PM
Script : http://www.******.nl/forums/register.php?do=addmember
Referrer : http://www.******.nl/forums/register.php
IP Address : 82.156.55.38
Username : Jack'
Classname : vB_Database
MySQL Version :

[Reycer]

Your MYSQL is timing out. You need to reset your timeout on your MYSQL to something higher. You'll need to contact your host provider to have this done.

This read might help you HERE

[temsamane]

Originally Posted by Reycer

Your MYSQL is timing out. You need to reset your timeout on your MYSQL to something higher. You'll need to contact your host provider to have this done.

This read might help you HERE

thank you reycer, you give me the right answer! thnx!

[Reycer]

no problem.