[CentOS] htaccess authentication asks for MySQL table test.user_info

Hello.

I tried to create an access file with 'htpasswd -c 
/etc/httpd/conf/myfile.htaccess testuser'.
In the SSL directory I have put a .htaccess file containing the followings:

AuthUserFile /etc/httpd/conf/myfile.htaccess
AuthName "Mydomain"
AuthType Basic
require valid-user

This worked with CentOS 3.
Now with CentOS 4, apache version 2.0.52, the access to the page is 
forbidden.
The ssl_error_log indicates this error:

[Mon May 16 10:03:21 2005] [error] [client 192.168.0.1] MySQL ERROR: Table 
'test
.user_info' doesn't exist: /myurl_to_ssl_address
[Mon May 16 10:03:21 2005] [error] [client 192.168.0.1] MySQL user testuser 
not fou
nd: /myurl_to_ssl_address

It's like if apache would make a MySQL query to find the user I specified, 
but in fact I expected apache to look into the 
/etc/httpd/conf/myfile.htaccess for that, and not in MySQL.

Another person had the same problem lately. Here is the post:

http://groups.google.ch/group/alt.apache.configuration/browse_frm/thread/9e72a6f834fa38e0/1309ed14100875ee?tvc=1&q=%22MySQL+ERROR:+Table+%27test.user_info%27+doesn%27t+exist%22&hl=fr#1309ed14100875ee

Does anybody have an idea of what happens there ?

Thanks for any help provided.

Daniel