Permissions problem - Mailing list pgsql-hackers

Hi,

I am having problems with permissions in postgres. I am using version 7.1.3 of
Postgres running on RedHat 7.2. 

I create the table "accounts" and revoke all permissions for the PUBLIC user:  
accounts | {"=","dcl=arwR"}

However, any user can make a select or update in the table "accounts".

Can anybody help me?!

Thanks a lot.