To All:
I ran across another interesting Postgres issue dealing with Serials and found that not all Serials are equal.
To find out if you are affect by this issue and need to attend this talk just run this query on all your databases. If the result is greater than 0, this is a must attend talk is for you.
SELECT count(*) FROM pg_catalog.pg_attrdef
WHERE adnum = 1
AND adsrc LIKE '%::text)::regclass)';
Lloyd