PostgreSQL 7.1 and Sequences

I've recently upgraded to 7.1 and have the following situation which no
longer works:

As user "nmnadmin":

CREATE TABLE blah {
id NOT NULL SERIAL,
info text NOT NULL
};

GRANT SELECT, INSERT, UPDATE, DELETE ON blah TO nmnuser;

As user "nmnuser":

INSERT INTO blah (info) VALUES ('foo');

I get the following error:
blah_id_seq.nextval: you don't have permissions to set sequence blah_id_seq

Short of actually creating the sequence as "nmnuser", is there any way to
make this work?

Cheers,

--
Alastair D'Silva (mob: 0413 485 733)
Networking Consultant
New Millennium Networking (web: http://www.newmillennium.net.au)