how do i check autovacuum is running?

[Dapeng <dapeng@xxxxxxxxxxxxxxx>]

my server
   FreeBSD 6.0
   Postgres 8.1


i have modified the postgresql.conf

enabled the following
   autovacuum,
   stats_start_collector
   stats_row_level
as documented in the manual

now i restart my server

use PgAdmin (under xp) to access my server ... i still got the hint : 
Running pg_autovacuum recommended




is there anyway to check that the autovacuum is running or not ??


regards