Postgresql 8.2 AUTOVACUUM LOG

Bonjour a Tous,

    There is an AUTOVACUUM capability embedded within
    PostgreSQL 8.2 (fedora core 7, postgresql-8.2.5-1.fc7)
    How/where can I see in the log if indeed Autovacuum
    started itself??
    How can I trigger Autovacuum execution (as it
    will do by itself)???

    Here is the relevant part of my postgresql.conf

;----------------------------------
 #to have autovacuum started
autovacuum = true
autovacuum_naptime = 1min
#debug flag
log_min_messages = debug2
client_min_messages = debug2
;-----------------------------------

    After days my DB intense activity, I have
    no proof autovacuum started itself...
    What am I missing here?

    Thanks for help or hints.

--
A bientôt
==========================================================================
Jean-Marc Pigeon                                   Internet: jmp@safe.ca
SAFE Inc.                                          Phone: (514) 493-4280
                                                   Fax:   (514) 493-1946
        Clement, 'a kiss solution' to get rid of SPAM (at last)
           Clement' Home base <"http://www.clement.safe.ca">
==========================================================================