Users not visible

Login with root, then go in Configuration->Users, I can “create new
user” and see users “root” only.
Where are my 3 other users?
It says that if y user is not seen, I can search for him with search
tool. It works, but I want to see my users there! How?
And when I go in “add members in group”, I can only see “root” user.

Any idea?

Jean-Eric Cuendet
Linkvest SA
Av des Baumettes 19, 1020 Renens Switzerland
Tel +41 21 632 9043 Fax +41 21 632 9090 E-mail: