TCP/IP connection on PostGre 8.0

Hi all,
Follosing is the list of RPM installed on my FC4

postgresql-libs-8.0.8-1.FC4.1
postgresql-server-8.0.8-1.FC4.1
postgresql-docs-8.0.8-1.FC4.1
postgresql-8.0.8-1.FC4.1
postgresql-devel-8.0.8-1.FC4.1

And following is the contnet of the

===postgresql.conf file

#---------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#---------------------------------------------------------------------------

# - Connection Settings -

listen_addresses = 'localhost' # what IP interface(s) to listen on;
# defaults to localhost, '*' = any
port = 5432
#tcpip_socket = true
max_connections = 100
# note: increasing max_connections costs about 500 bytes of shared
# memory per connection slot, in addition to costs from shared_buffers
# and max_locks_per_transaction.
#superuser_reserved_connections = 2
#unix_socket_directory = ''
#unix_socket_group = ''
#unix_socket_permissions = 0777 # octal
#rendezvous_name = '' # defaults to the computer name

# - Security & Authentication -

#authentication_timeout = 60 # 1-600, in seconds
#ssl = false
#password_encryption = true
#krb_server_keyfile = ''
#db_user_namespace = false

=========== pg_hba.conf file

# TYPE DATABASE USER CIDR-ADDRESS METHOD

# "local" is for Unix domain socket connections only
local all all trust
# IPv4 local connections:
host all all 0.0.0.0 0.0.0.0 trust
# IPv6 local connections:
host all all ::1/128 trust

But when I try to connect it using pgAdmin3 tool its giving erro :

"Error Connectiong to the server : coldnnot connect to
server.Connectionrefused . Is the Sserver running on host " ip add"
and accepting TCP/IP
conections on port 5432?"

the service staus is running.

And when i used : netstat -a . then only

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address
State

tcp 0 0 Portal:postgres *:*
LISTEN

Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ACC ] STREAM LISTENING 10315 /tmp/.s.PGSQL.5432

So Can any body tell me whts the prob with this?? why I am not able to
connect it on tcp ip port???