NOTICE: (transaction aborted): queries ignored until END

Hello ,

I have a program (swatch on a Cobalt RaQ3) with access to a
postgresql DB (version 6.5.2-C2) that was working good until I
added a user with select privileges on one of
the tables. I created a Perl script that connect to the DB with the
new user and password using the DBI and DBD. But after the first run
of the new Perl script the original program started to not update the
DB and to give the error:
"NOTICE: (transaction aborted): queries ignored until END"

I can't change the original program or even read it.

On a RaQ4 with a different version of swatch and postgresql (7.0.2)
everything is working well.

Thank you for your answers,
Radu