Error Occured while connecting to db, check your db settings...

http://198.245.60.19/ehcp/

Warning: mysql_connect(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /var/www/new/ehcp/config/adodb/drivers/adodb-mysql.inc.php on line 365
Error Occured while connecting to db, check your db settings...
This is mostly caused by wrong ehcp password in config.php
if you just installed ehcp, then learn/know your ehcp root password, then re-install ehcp..
you may also try troubleshoot page or Additional mysql troubleshooter... or www.ehcp.net/?q=node/245 Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
Warning: mysql_real_escape_string(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /var/www/new/ehcp/classapp.php on line 1588 Warning: mysql_real_escape_string(): A link to the server could not be established in /var/www/new/ehcp/classapp.php on line 1588

please help ???

your mysql server seems down.
try this in server console:

/etc/init.d/mysqld restart