[ADMIN] 8.1.3 - autovacuum question

[Chris Hoover]

I turned on autovacuum on one of my database servers over the weekend.  I have been looking at the logs trying to see what it is doing.  However, all I see are lines like this:
,7674,,2006-06-26 16:31:37.650 EDT,,1,,,,LOG:  autovacuum: processing database "postgres"

Is there a way to tell if autovacuum is actually doing any work?  As far as I can see, it is running, but has not done any work.  Thanks for any help on tracking what autovacuum is doing.

Chris