Warning: mysql_select_db() [function.mysql-select-db]: Access denied for user 'root'@'localhost' (using password: NO) in /usr/home/www/blognetwork/www/db.php on line 6

Warning: mysql_select_db() [function.mysql-select-db]: A link to the server could not be established in /usr/home/www/blognetwork/www/db.php on line 6
upgrading server...please try later