Multi User Chat and users list

Hello

I just searched the forums but couldn’'t find anything.

On my jabber server (Openfire 3.3.1) I use the Multi User Chat feature. But unfortunately I don’'t see which users are online. This is happens with any client (I tried Gaim2b6, Pidgin, Gajim and jwchat). There are also no notifications about users entering a chatroom, but a notification about leaving users.

In the server’'s admin console I can see which users are online.

Well, this is of course inconvenient for my users. How can this be fixed? Is this a problem of the server or the clients?