pg_hba.conf

Hi,
I am having problems with my connectivity for any of the users other
than the post gres. Let me elaborate on the situation

I am using OSX and i have changed the pg_hba.conf file to reflect
ident_authentication. I have attached my pg_hba.conf file. When i try
connecting as a user i get the following error

Gowri-Sivaraman:~ gowri$ psql -h localhost gen3logger
psql: FATAL: Ident authentication failed for user "gowri"

Even when i have given the user gowri trust authorization, it is not
working. For some reason, it is recognizing local . when i connect
using the host it is working. Can anybody let me know if i am missing
something here

Gowri-Sivaraman:~ gowri$ psql -h 127.0.0.1 -U gowri template1
Welcome to psql 8.1.3, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help with psql commands
\g or terminate with semicolon to execute query
\q to quit

SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)

template1=>