Fatal error: Connecting to MySQL server 'localhost' failed.

You get more information about the problem in our knowledge base: http://www.woltlab.com/help/?code=1045

Information:

error message: Connecting to MySQL server 'localhost' failed.
error code: 1045
sql type: MySQLDatabase
sql error: Access denied for user 'web171'@'localhost' (using password: YES)
sql error number: 1045
sql version:
file: /home/www/web171/html/acctrade/wcf/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.2.9
wcf version: 1.0.10 (Horizon)
date: Fri, 27 Jan 2012 23:50:51 +0000
request: /
referer:

Stacktrace:

#0 /home/www/web171/html/acctrade/wcf/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /home/www/web171/html/acctrade/wcf/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /home/www/web171/html/acctrade/wcf/lib/system/WCF.class.php(88): WCF->initDB()
#3 /home/www/web171/html/acctrade/global.php(21): WCF->__construct()
#4 /home/www/web171/html/acctrade/index.php(3): require_once('/home/www/web17...')
#5 {main}