[Q] 6.3.2->6.5.1, pg_dump with large object & backend cache...

Hello,

We are using v6.3.2 with patches, and using many tables which
uses 'large object'. Main problem with it is

(1) cannot dump large object, is this still true in v6.5.1 ?
or no plan for immplementing dumping blobs in near future?
(2) if I want to clone dbs from linux to solaris machine, due to the above
lo & pg_dump problem, lots of manual works needed to dump dbs
-> restore to another architecture machine... Is there any utility
to ease duplication(backup) of dbs?
(3) to upgrade v6.3.2 dbs to v6.5.1, including large objects, is there
ways to dump/restore?

Another problem with v6.3.2 is frequent messages(error?) related to
the backend cache invalidation failure -- probably posted many times...
like this:
NOTICE: SIAssignBackendId: discarding tag 2147430138
Connection databese 'request' failed.
FATAL 1: Backend cache invalidation initialization failed
(1) Increasing max connection # from 32 to 64 in
src/include/storage/sinvaladt.h will simply fix above problem?
(2) If I want to keep v6.3.2, which PATCH will FIX above problem?
(3) already fixed in v6.5.1?

Best Regards,
C.S.Park