pg_dump: relation "..." already exists warning

Hi all,
[Using postgres (PostgreSQL) 7.4.7 on GNU/Linux/Debian-Sarge]

running the command:
$ pg_dump finanz -t ult_qq | psql finanza ennio ult.qq

I can see that table 'ult_qq' is regularly created in 'finanza' and
continues to exist in 'finanz', although pg is firing this warning:

SET
SET
SET
SET
ERROR:  relation "ult_qq" already exists
SET
ERROR:  relation "ult_qq" already exists
SET
SET

which I'm unable to explain. Could it be related to unresolved bug #1379
or am I doing anything wrong?

Thanks for your attention.
Regards,
    Ennio.

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