Problem checking out webwml

["Jaime E . Villate" <villate@fe.up.pt>]

I'm new to debian-www, so please forgive me if I'm asking something trivial.
I've downloaded a copy of CVSROOT/passwd using
:pserver:aonymous@cvs.debian.org:/cvs/webwml and I can see that Javier has
given me access:
     villate:(encrypted password):treacy

and I've checked that the encrypted password is OK. However, I cannot login as
"villate":

cvs -d :pserver:villate@cvs.debian.org:/cvs/webwml login    
(Logging in to villate@cvs.debian.org)
CVS password: 
Fatal error, aborting.
villate: no such user

I have also tried using :ext: and it doesn't work either

export CVS_RSH=ssh
cvs -d :ext:villate@cvs.debian.org:/cvs/webwml checkout webwml
villate@cvs.debian.org's password: 
Permission denied, please try again.

What am I doing wrong?

Cheers,
Jaime