Mine

CREATE TABLE questions
(
  id int4 NOT NULL DEFAULT nextval('questions_id_seq'::regclass),
  name varchar,
  email varchar,
  editor_id int4,
  question text,
  answer text,
  ok bool,
  mail_sent bool DEFAULT false,
  mail_sent_at timestamp,
  updated_at timestamp,
  "notify" bool,
  created_at timestamp,  <--------------------- if i remove that save works
  CONSTRAINT q_pk PRIMARY KEY (id)
) 
WITH OIDS;