'pg_class_aclcheck: relation <oid> not found' with temp tables in plpgsql

Cheers-

I'm getting warnings like this in a pl/pgsql function:
ERROR: pg_class_aclcheck: relation 32523241 not found

The function is (this is, obviously, just to demonstrate the problem):
create or replace function temptest() returns void
language plpgsql as '
DECLARE
m integer;
n integer;
BEGIN
FOR m IN 1..10 LOOP
create temp table less_than_m as
select distinct pseq_id from pseq where pseq_id<m;
select into n count(*) from less_than_m;
raise notice ''there are % less than %'',n,m;
drop table less_than_m;
END LOOP;
END;';

I see one other report of a similar problem and Tom Lane replied
(http://archives.postgresql.org/pgsql-bugs/2003-05/msg00086.php), but I
don't understand the issue or his response. I tried to wrap the create
and drop in EXECUTE '...', but that didn't work.

Does anyone have a suggestion for how I might resolve this? I'd
appreciate a short description of the issue as well.

Thanks,
Reece

--
Reece Hart, Ph.D. rkh(at)gene(dot)com, http://www.gene.com/
Genentech, Inc. 650/225-6133 (voice), -5389 (fax)
Bioinformatics and Protein Engineering
1 DNA Way, MS-93 http://www.in-machina.com/~reece/
South San Francisco, CA 94080-4990 reece(at)in-machina(dot)com, GPG: 0x25EC91A0