Warning: mysql_connect() [function.mysql-conn

Bonjour,
Merci de maidez j'ai acheter le smart g1 de ovh et des que jh'éberge des fichier .php (tchat livre d'or forum)
voila mes erreur:

La sources est ici
http://www.siteduzero.com/tutoriel-3-14547-tp-un-livre-d-or.html

Warning: mysql_connect() [function.mysql-connect]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /homez.165/..../www/livreor.php on line 30

Warning: mysql_select_db() [function.mysql-select-db]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /homez.165/..../www/livreor.php on line 31

Warning: mysql_select_db() [function.mysql-select-db]: A link to the server could not be established in /homez.165/desaintm/www/livreor.php on line 31

Warning: mysql_query() [function.mysql-query]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /homez.165/..../www/livreor.php on line 54

Warning: mysql_query() [function.mysql-query]: A link to the server could not be established in /homez.165/..../www/livreor.php on line 54

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /homez.165/..../www/livreor.php on line 55
Page :

Warning: mysql_query() [function.mysql-query]: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /homez.165/..../www/livreor.php on line 88

Warning: mysql_query() [function.mysql-query]: A link to the server could not be established in /homez.165/..../www/livreor.php on line 88

Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in /homez.165/..../www/livreor.php on line 90

Warning: mysql_close(): no MySQL-Link resource supplied in /homez.165/..../www/livreor.php on line 95

Merci de maider sa serait sinpat