cvs [pserver aborted]: bad auth protocol start:

[mmerlone]

I am trying to set up a cvs server on Ubuntu 7.10. I just
aptitude install cvs
When trying to connect from the client (Eclipse plataform) it gets connection refused, so I think I should run the server:
root@marte:~# /usr/sbin/cvs-pserver
(just after I press return here)
cvs [pserver aborted]: bad auth protocol start:
root@marte:~#

If I run manually I get exaclty the same:

root@marte:~# /usr/bin/cvs -b /usr/bin --allow-root=/var/lib/cvs pserver
(just after I press return here)
cvs [pserver aborted]: bad auth protocol start:
root@marte:~#

The odd thing is that the error message just appears when I press return after the command.
I searched google and those forums but none got a clue of what is going on. Or am I misunderstanding everything? Can anyone please help1?

Thanks in advance.