http://stackoverflow.com/questions/6950395/postgresql-server-wouldnt-shutdown-on-lion-mac-os-10-7
launchctl unload -w ~/Library/LaunchAgents/org.postgresql.postgres.plist rm ~/Library/LaunchAgents/org.postgresql.postgres.plist #pg_ctl -D /usr/local/var/postgres stop pg_ctl -D /usr/local/var/postgres start