Connection Error

MySQL Error : Connection Error
Error Number: 1251 Client does not support authentication protocol requested by server; consider upgrading MySQL client
Date        : Fri, May 16, 2008 10:25:05
IP          : 38.103.63.17
Browser     : CCBot/1.0 (+http://www.commoncrawl.org/bot.html)
Referer     : 
PHP Version : 4.4.7
OS          : Linux
Server      : Apache/1.3.41 (Unix) PHP/4.4.7 mod_log_bytes/1.2 mod_bwlimited/1.4 mod_auth_passthrough/1.8 FrontPage/5.0.2.2635 mod_ssl/2.8.31 OpenSSL/0.9.7a
Server Name : www.logicmaze.com
Script Name : /polls/december-06poll.php