We are suffering from the same issue that is described in this email thread http://archives.postgresql.org/pgsql-general/2005-07/msg00486.php.
I don't know if this is the appropriate place to make this request, so if not, please forgive me. However, in our particular case, we don't have enough disk space nor money to allow the indexes to grow to a steady state. We are willing to pay someone to implement the suggested fix described in the above thread on version 8.0.3. If interested, please respond to this email with your contact information and a rough idea of how much it would cost and how long it would take to get the job done.
Thank you for your consideration.
Brent
