Killing OIDs

I'm about to deal with an upgrade of a server running 7.4. I have
checked with the developers and they are not using OIDs so I'd like to
remove them so they aren't carried forward to 8.3.

My plan is to do the OID removal on 7.4. I can get a script with:
SELECT
    'ALTER TABLE ' || relname || ' SET WITHOUT OIDS;'
FROM
    pg_class
WHERE
    relkind='r' and
    relowner != 1 and
    relhasoids;

Before I pull the trigger, I figured I'd post and find out if anyone
sees any feet in the way.

Cheers,
Steve