Evgeny Gridasov wrote:
autovacuum starts even if autovacuum=off is set in config file, I've checked
it through 'show autovacuum' and see it off. But still there is an
autovacuum process vacuuming the tables.

Even when you disable autovacuum with autovacuum=off, it's still launched to prevent xid wraparound. See the documentation on xid wrap-around:

http://www.postgresql.org/docs/8.2/interactive/routine-vacuuming.html#VACUUM-FOR-WRAPAROUND

and on the autovacuum_freeze_max_age configuration variable for more information.

is this 8.2.4 CVS-only issue?

No. It's a new feature in the 8.2.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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