In previous versions of Moodle (pre roles) it was possible to put the participants block on the home page and get a listing of all the users on the site. This uses the '/user/index.php' script.
In post-role versions, this no longer seems possible. The '/user/index.php' script will not return all users no matter what the settings on the site. Is this intentional?
mike
I'm having this same problem - did you find a solution? In fact I find 'roles' a bit badly behaved in general. I had problems with a chat room on the front page that some could enter and others could not - it seemed almost random - I fixed it using 'roles' but I think they should all have worked or all not worked - if you know what I mean.