Yes I have used it and it works. Please see the article:
http://www.javaworld.com/javaworld/jw-08-2001/jw-0831-jaas_p.html

I changed the XML configuration to go directly against a stored procedure.

anything useful in the log?
if not, try to insert the following in the log4j.xml:

hi
i have a similar problem
everything works fine when i log on the first time, it allows me to enter a username and password(using BASIC authentication).
somehow right now, it gives me an 403 error all the time and does not prompt to authenticate...
i think it is something that is happening with the cache somewhere where it remembers the authentication...
any ideas
vinaya

Please explain clearly what your problem is.
If it is just logging in that fails, i can't see what the cache has to do with it. So describe what your doing, attach relevant files (web.xml, jboss-web.xml), copy relevant parts from the log, etc.
We are just humans; we can't see what is going on at your place...

Peter.