Well it defaults to mapping to the current user, so you would have wanted:
psql -U myuser mydb
Or just create a postgres user named dagon and create the db as owned by
that user. Or su myuser before running psql...
--
Scott Ribe
scott_ribe(at)killerbytes(dot)com
http://www.killerbytes.com/
(303) 722-0567 voice