mod_auth_mysql的问题

配置好之后，error_log 总是报错：
==> error_log <==
[Tue Jul 17 11:01:43 2007] [error] [client 222.125.50.63] user wudi001 not found: /

httpd.conf的配置如下：
LoadModule mysql_auth_module modules/mod_auth_mysql.so

<Directory />
Options All
AllowOverride All
AuthType Basic
AuthMySQLEnable On
AuthUserFile /dev/null
AuthGroupFile /dev/null
AuthName NBTAuth
AuthType Basic

AuthMySQLHost localhost
AuthMySQLPort 3306
AuthMySQLUser authapache
AuthMySQLPassword 123456

AuthMySQLDB authmysql
AuthMySQLUserTable user_info
AuthMySQLNameField user_name
AuthMySQLPasswordField user_passwd
AuthMySQLGroupField user_group

AuthMySQLPwEncryption md5
AuthMySQLAuthoritative Off
Require valid-user
</Directory>
====
系统环境：RH9 + PHP 4.3.9 + Apache 2.0.54
mod_auth_mysql 3.0.0

Options All
这样设置不安全