Auto Vacuum not starting unless postgres is restarted

Hi,

On startup we get an error in the postgres log that the Autovacuum process has
failed to start -- "autovacuum not started because of misconfiguration".
However, if we do a restart (/etc/init/d/postgresql8.1 restart) then the
autovacuum starts fine.

Does anybody have any idea what the problem might be?

Postgres Version: 8.1.4
OS: Ubuntu Linux 6.0.6

Thanks

Nick
--
Nick Howden -  Senior IT Analyst
QinetiQ Trusted Information Management
Woodward Building, Room B009
Malvern Technology Park, WR14 3PS
Telephone 01684 895566, Fax 896660

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