Postgresql 7.4.1 - Template database and user permission

Hello,

I'am using postgresql to make different web site with differente
database for each, but with same table/link/...
So, i change from 7.2 to 7.4 and try to use template function to create
each new DB more easier (with user posgres):

CREATE DATABASE myowntemplate TEMPLATE = template1;

After that, i create the differentes tables.

I create my user and create the db for each user :

CREATE DATABASE user_db OWNER = user TEMPLATE = myowntemplate;

Update data, and try it.

But i got a msg in the postgresql.log that my user have not the
permission to access the tables :

ERROR: permission denied for relation table1
ERROR: permission denied for relation table2
[...]

So maybe i made a mistake, by i thought by making "user" the owner of
"user_db", he will gain each priviliges on "myowndb".

Thanx for answers,
regards,