Hello!
I'm sorry for my bad English.
I found a bug with user rights.
Situation:
CREATE TABLE kaka;
CREATE USER baka;
GRANT SELECT ON kaka TO baka;
SELECT relname, relacl FROM pg_class WHERE relname='kaka';
relname|relacl
-------+---------------
kaka |{"=","baka=r"}
DROP USER baka;
SELECT relname, relacl FROM pg_class WHERE relname='kaka';
relname|relacl
-------+---------------
kaka |{"=","33=r"}
^^^- Wow! Why?
CREATE USER abc;
SELECT relname, relacl FROM pg_class WHERE relname='kaka';
relname|relacl
-------+---------------
kaka |{"=","abc=r"}
Wait, wait... I don't make access to user 'abc'.
User 'abc' got access to table kaka AUTOMATICALY!
With best wishes,
Victor Vislobokov
Perm, Russia