Database Problems

I got a problem with the installation of wp,
i changed my php config file to:
// ** MySQL settings **
define(‘DB_NAME’, ‘motou’); // The name of the database
define(‘DB_USER’, ‘motou’); // Your MySQL username
define(‘DB_PASSWORD’, ‘password’); // …and password
define(‘DB_HOST’, ‘freesql.org’); // 99% chance you won’t need to change this value
but it doesn’t work. It complained always
“Cannot connect to the database”
and when i click further, i found Wp-install.php tries using ‘root@localhost’ to connect a database, but not the user name. Is that a bug in WP?
i use freesql.org as mySQL supporter.
Any reply will be appreciated.