watch your DBI scripts if you are upgrading to 7.1

psql no longer works the systax
    $ psql dbname@hostname

In my DBI scripts I had
    $d=DBI->connect('dbi:Pg:dbname=dbname@hostname','user')
That must be rewritten as
    $d=DBI->connect('dbi:Pg:dbname=dbname;host=hostname','user')