FATAL: cache lookup failed for access method 6881280

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I'm getting this message when I try to access one of the databases in
my cluster:

FATAL:  cache lookup failed for access method 6881280

I get the message any way I try to access it: remotely via TCP,
locally on the db server, as well as with a single-user mode postgres
command.

Any ideas what could be the cause, or what I could do to fix it?  All
the other (30+) databases in the cluster appear to be perfectly fine.

Thanks,

Brock
- --
Brock Williams  brock@cotcomsol.com
Cottonwood Computer Solutions, Inc.
www.cotcomsol.com 406-896-4910
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