odbc with debian woody/postgres

Hi there,

I'm trying to get odbc to work on my machine. Here's the setup:
Debian Woody with Postgresql 7.2; unixodbc and odbc-postgresql also
installed. I followed the directionsi n the 'Debian HOWTO' that comes
with the odbc-postgresql package, so my odbcinit.ini looks like this:

[PostgreSQL]
Description = PostgreSQL ODBC driver for Linux and Windows
Driver = /usr/lib/postgresql/lib/libodbcpsql.so
Setup = /usr/lib/odbc/libodbcpsqlS.so
Debug = 0
CommLog = 1
FileUsage = 1

My odbc.ini currently looks like this (slightly modified from the
original):

[PostgreSQL]
Description = PostgreSQL template1
Driver = PostgreSQL
Trace = No
TraceFile = /tmp/odbc.log
Database = template1
Servername = localhost
UserName = postgres
Password = postgres
Port = 5432
Protocol = 6.4
ReadOnly = Yes
RowVersioning = No
ShowSystemTables = No
ShowOidColumn = No
FakeOidIndex = No
ConnSettings =

and the relevant lines of pg_hba.conf are the following:
local all trust
host all 127.0.0.1 255.0.0.0 ident
sameuser
host all 0.0.0.0 0.0.0.0 reject

With this setup I can't seem to get odbc towork. I should note that
psql works fine, and that odbc works fine with mysql (I've left the
mysql bits of the odbc*.ini files out) -- in fact, it worked right out
of the box, which was kind of amazing given how hard a time I'm having
with postgresql). using isql I get the following error:
-------------------
isql Postgresql -v
[unixODBC]FATAL 1: IDENT authentication failed for user "postgres"

[ISQL]ERROR: Could not SQLConnect
-----------------
I'm doing all this directly from the shell, so I don't understand why
Postgres is using the 'ident' verification method. Can anyone give me
any pointers? Again, I've had no problem iwth psql or the mysql/odbc
combination, so I assume something is wrongwith my setup for
postgres. Thanks,
Matt

ps: assuming I get thisworking, how do I add other database names to
odbc.ini? Do I need whole new sections (like
"[Postgresql/dbname]") or can I just add the dbnames to the Database
line of the file?