connection error

On Thu, 5 Feb 1998, Thomas G. Lockhart wrote:

> > There's an error while inserting data into a column defined as VARCHAR without
> > length in PostgreSQL 6.3.
> > Take a look:
> >
> > postgres=> CREATE TABLE prova ( uno VARCHAR(10) );
> > CREATE
> > postgres=> INSERT INTO prova VALUES ( 'OK' );
> > INSERT 153042 1
> >
> > postgres=> CREATE TABLE prova2 ( uno VARCHAR );
> > CREATE
> > postgres=> INSERT INTO prova2 VALUES ( 'NOT OK' );
> > PQexec() -- Request was sent to backend, but backend closed the channel before responding.
> > This probably means the backend terminated abnormally before or while processing the request.
>
> Jose, please post problem reports to hackers, not to questions, on not-yet-released versions. I've moved
> this to hackers.
Ok, sorry.
>
> btw, I saw this too but in a different context and wasn't certain if it was a new problem:
>
> postgres=> select char_length('hi'::text);
> length
> ------
> 2
> (1 row)
>

I've another problem about connection
when I try to connect to PostgreSQL using:
psql postgres -h server
I have this error:

Connection to database 'postgres' failed.
User authentication failed

I'd ran postmaster with -i as:

postmaster -i -o -F -B 512 -S > server.log 2>&1

Any idea?
Thanks, Jose'