We are experiencing a similar problem, even though we are on 8.4 and have
been for a while, and have autovacuum turned on. I have regular concurrent
reindexes on the indexes but the primary key is seriously bloated. I was
considering doing the same thing, that is, create another primary key that
is built on a sequence ( primarily for slony) and then change my current
multi-column primary key to a unique index. Have you been able to work
around the problem in any other way?
Thanks
RV
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