String index out of range: 23 problem with timestamp milliseconds

Hi,

We have a timestamp column in one table and we are getting the above problem
when the timestamp column has a value up to milliseconds.

We are using stable PostgreSQL 7.2 jdbc driver (pgjdbc2.jar) got from
http://jdbc.postgresql.org/download.html. Does anyone know of latest
production ready driver that fixes this problem?
Thanks
Yuva