unrecognized configuration parameter "synchronize_seqscans"

Hey all, I posted this over on the EDB forums as well, no answers yet, so I
am trying here.
I am trying to set up a pg_dump between a postgresql 8.3.1 server and edb
8.3 server.

This is to get slony working between the two.

When I do:

pg_dump -s -U testmaster -h 10.0.0.1 -p 5444 testuser | psql -U postgres -h
localhost testslave

I get:

pg_dump: SQL command failed
pg_dump: Error message from server: ERROR: unrecognized configuration
parameter "synchronize_seqscans"
pg_dump: The command was: SET synchronize_seqscans TO off

Any ideas on how to get around this? - Maybe manually doing the dump
command with psql?

Thanks

Mikel