[cmennens@slave ~]$ uname -r 
2.6.35-ARCH

[cmennens@slave ~]$ sudo pacman -Qs postgresql
Password: 
local/postgresql 9.0.1-2
    A sophisticated object-relational DBMS
local/postgresql-libs 9.0.1-2
    Libraries for use with PostgreSQL

[cmennens@slave ~]$ sudo /etc/rc.d/postgresql restart
:: Stopping PostgreSQL                                                                                                                                               [BUSY] pg_ctl: PID file "/var/lib/postgres/data/postmaster.pid" does not exist
Is server running?
                                                                                                                                                                     [FAIL] 
:: Starting PostgreSQL                                                                                                                                               [BUSY] server starting
                                                                                                                                                                     [DONE] 
[cmennens@slave ~]$ sudo /etc/rc.d/postgresql stop
:: Stopping PostgreSQL                                                                                                                                               [BUSY] pg_ctl: PID file "/var/lib/postgres/data/postmaster.pid" does not exist
Is server running?
                                                                                                                                                                     [FAIL]