安装时出现这样的东西!怎么回事呢??

Discuz! info: Can not connect to MySQL server

Time: 2006-2-27 8:26am
Script: /bbs/install.php

Error: Client does not support authentication protocol requested by server; consider upgrading MySQL client
Errno.: 1251

An error report has been dispatched to our administrator.


这是怎么回事呢?我是在提交了数据库用户名和密码和数据库名字之后出现这些字的~~~谁知道怎么回事?
我的MYSQL5.0, 而且可以用CMD访问