upgrade causes psql to not work

did a centos 5.6 server upgrade to PostgreSQL version 8.4.12.
console:
[root(at)main jdbc]# psql -h localhost -U gameserver
passwordfromentityengine.xml

psql: could not connect to server: Connection refused
Is the server running on host "localhost" and accepting
TCP/IP connections on port 5432?

I notice there is no localhost and th 127.0.0.1 has /32 added.
I can not add a localhost to the allowed hosts

psql is running
if I do
[root(at)main jdbc]# psql -U gameserver
passwordfromentityengine.xml
with out defining the host, it works.

I believe it is using Unix pipes instead of TCP
I also can manage the psql server through webmin.

I looked on the http://jdbc.postgresql.org/
and could not find any docs on the jdbc string to use my old one with
localhost and 127.0.0.1 do not work any more.
here is the conf
# "local" is for Unix domain socket connections only
local all all trust
# IPv4 local connections:
host all all 127.0.0.1/32 trust
# IPv6 local connections:
host all all ::1/128 trust
host all all 127.0.0.1 255.255.255.255 trust
host all all 0.0.0.0 0.0.0.0 trust