psql undefined symbol error on Ubuntu

Hello Friends,

I have installed postgres client on an Ubuntu machine. However, when I
try to run 'psql', I get this error message:

# psql
/usr/lib/postgresql/8.3/bin/psql: symbol lookup error:
/usr/local/lib/libreadline.so.5: undefined symbol: PC

Here is some information about the machine:
# uname -a
Linux hostname.domain.net 2.6.24-22-generic #1 SMP Mon Nov 24 19:35:06
UTC 2008 x86_64 GNU/Linux

Client installed: postgresql-client - front-end programs for PostgreSQL
(latest version)

Please let me know if more information is needed.

Thanks,
Harsha Hegde
Database Developer,
Vonage | 23 Main Street | Holmdel, NJ 07733
t: 732-203-7562
e: harshaDOThegdeATvonageDOTcom

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