I've installed Zentyal 3.3 on my virtual Ubuntu server (12.04.4 LTS (GNU/Linux 3.2.0-23-generic x86_64)) as package. But when I try to login, Zentyal throws "Incorrect password". I've added my user to the
adm group, but I can't login into the Zentyal web interface.
Connection over SSH with this user works like a charm.