Psql errors

Hello,

I just installed Postgres 8.3.4. I have an instance of 8.2.4 running
on the same box. When I start psql I get errors as follows:

Welcome to psql 8.3.4 (server 8.2.4), 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

WARNING: You are connected to a server with major version 8.2,
but your psql client is major version 8.3. Some backslash commands,
such as \d, might not work properly.

template1=# \l
ld.so.1: psql: fatal: relocation error: file /db02/postgres/bin/psql:
symbol pg_valid_server_encoding_id: referenced symbol not found
Killed
-bash-3.00$

There are two problems here that may or may not be related. One
problem is that when I start psql using the binary I just loaded, the
right version of psql starts but it is looking at the wrong database
instance. Secondly, there is a library that in can't find.

Please help with debugging these problems.

Thank you very much,
Carol