User rights

Hello.

We are currently running PostgreSQL 7.0.3 for our Intranet database. We
will switch to 7.1.2 in a while.

However, I just experienced strange behaviours with our current
installation.

1) password authentification

We use this method for our local network, with this line in pg_hba.conf:

host all <network-address> 255.255.255.0 password passwd

The "passwd" file is generated from our shadow database.
The problem is, if a user tries to authenticate and is not in the
pg_shadow system table but *is* in the passwd file, the access will
always fail. If the user appears in the pg_shadow table, no problems.

Is this a normal behaviour ?

2) User re-creation

By mistake, I deleted a user (me in fact) from the pg_shadow table. I
was the owner of several tables. As a superuser, I re-created the user,
with the same information, sysid included. But now, I am unable to
manage or even do some SELECT on the table I was the owner. I checked
the relowner field in the pg_class table, and it has the value of my
sysid....The only particular thing about these tables I am unable to
access is that they have some access rules, setup using GRANT
statements.

My question is : why the owner of a table have all the rights on it, or
did I missed something ?

Nicolas.