9.0 JDBC driver reporting invalid primary key meta data

Requesting primary key meta data via the JDBC driver [i.e.,
conn.getMetaData().getPrimaryKeys()] against PostgreSQL 9.0 reports
incorrect meta data for tables whose PK column(s) has been renamed. I'm
testing this against the latest 9.0 driver
(http://jdbc.postgresql.org/download/postgresql-9.0dev-800.jdbc4.jar
<http://www.google.com/url?sa=D&q=http://jdbc.postgresql.org/download/postgr
esql-9.0dev-800.jdbc4.jar&usg=AFQjCNE8mRwfaMyn6yLoWT4wrlpYnhbl0A> ) and the
PostgreSQL 9.0 Beta 4 release. I initially reported this problem during Beta
1 to the pgsql-testers alias; more details and repro code are here:
http://archives.postgresql.org/pgsql-testers/2010-05/msg00003.php

My understanding is this is an intentional compatibility break by the server
team that will require a change to the JDBC driver. The issue is of course
trivial to avoid or work around in a test environment, but it's a
showstopper for production environments. Many applications like ours must
operate on tables, columns, and constraints without any inherent knowledge
of or control over these database objects or their history; we rely
exclusively on information from the database server and simply can't
function with invalid meta data being reported.

Let me know if you need more information or if I can help with testing,
debugging, etc.

Thanks,

Adam