Problem with pg_dump

Hi!

I've got problem with dumping the database on the slave server.

Situation:

Master:
Running CentOS release 4.4 (Final) with PostgreSQL 8.2.4.

Slave:
Running CentOS release 4.3 (Final) with PostgreSQL 8.2.4 and slon
version 1.2.9

pg_dump on master works fine. On slave i've got error on start of
dumping:

-bash-3.00$ pg_dump -d -D my_database
pg_dump: failed sanity check, parent table OID 225893092 of
pg_rewrite entry OID 225893271 not found

Any ideas to solve this problem?

Best regards,

Piotr Konieczny