When I try to use pgadmin I keep getting authentication errors. I am using my own account and my login password.
The following does work:
$ sudo -u postgres createuser -s $USER $ createdb md3 $ psql -d md3 psql (9.1.3) Type "help" for help. md3=# However I then get this error in the pgadmin GUI:

Perhaps I should be using root or the postgres user?
-h localhost? It could be that you need to configure remote access: postgresql.org/docs/9.1/static/auth-pg-hba-conf.html