DEBUG output w/o debug set

I've recently installed Postgres 7.2, but this also applied to the 7.1.3
installation I had too. I'm seeing a lot of DEBUG messages being output to
the logfile/syslog, both when PG starts and stops, and also during VACUUM
ANALYZE runs (w/o verbose mode turned on); I start/stop PG via something
like:

su -l $PGUSER -c "pg_ctl start -D '$PGDATA' -s -l $PGLOG"

and the analyze runs are done from cron like so:

su -l $PGUSER -c "/usr/local/pgsql/bin/vacuumdb --all --analyze"

In postgresql.conf, the relevant section looks like:
---
# Debug display
#silent_mode = false
log_connections = true
log_timestamp = true
log_pid = true
#debug_level = 0 # range 0-16
#debug_print_query = false
#debug_print_parse = false
#debug_print_rewritten = false
#debug_print_plan = false
#debug_pretty_print = false
# requires USE_ASSERT_CHECKING
#debug_assertions = true
---

which to mean says that there shouldn't be much debug output (level=0); I'm
OK with the connection messages. I've attached some examples of the messages
below if they're helpful. Is this something I have done, or something I can
turn off? Its mainly the analyze lines that fill the log up. I'd have a
quick grep at the code for DEBUG's but I'll have to wait till I get home.

Cheers,
Joe

-- DEBUG examples:

Feb 12 17:13:40 www postgres[32308]: [1] DEBUG: smart shutdown request
Feb 12 17:13:40 www postgres[32375]: [2] DEBUG: shutting down
Feb 12 17:13:42 www postgres[32375]: [3] DEBUG: database system is shut
down
Feb 12 17:14:01 www postgres[32398]: [1] DEBUG: database system was shut
down at 2002-02-12 17:13:42 EST
Feb 12 17:14:01 www postgres[32398]: [2] DEBUG: checkpoint record is at
0/2CA848
Feb 12 17:14:01 www postgres[32398]: [3] DEBUG: redo record is at 0/2CA848;
undo record is at 0/0; shutdown TRUE
Feb 12 17:14:01 www postgres[32398]: [4] DEBUG: next transaction id: 1795;
next oid: 16557
Feb 12 17:14:01 www postgres[32398]: [5] DEBUG: database system is ready
Feb 12 17:14:08 www postgres[32410]: [1] DEBUG: connection: host=[local]
user=postgres database=template1
Feb 12 17:14:08 www postgres[32412]: [1] DEBUG: connection: host=[local]
user=postgres database=postgres
Feb 12 17:14:08 www postgres[32412]: [2] DEBUG: --Relation pg_type--
Feb 12 17:14:08 www postgres[32412]: [3-1] DEBUG: Pages 2: Changed 0, Empty
0; Tup 143: Vac 0, Keep 0, UnUsed 1.
Feb 12 17:14:08 www postgres[32412]: [3-2] Total CPU 0.00s/0.00u sec
elapsed 0.00 sec.
Feb 12 17:14:08 www postgres[32412]: [4] DEBUG: Analyzing pg_type
Feb 12 17:14:08 www postgres[32412]: [5] DEBUG: --Relation pg_attribute--
Feb 12 17:14:08 www postgres[32412]: [6-1] DEBUG: Pages 11: Changed 0,
Empty 0; Tup 795: Vac 0, Keep 0, UnUsed 21.
Feb 12 17:14:08 www postgres[32412]: [6-2] Total CPU 0.00s/0.00u sec
elapsed 0.00 sec.
Feb 12 17:14:08 www postgres[32412]: [7] DEBUG: Analyzing pg_attribute
Feb 12 17:14:08 www postgres[32412]: [8] DEBUG: --Relation pg_class--
...

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