assistance needed for autovacuum on the windows version of 8.2.3

Can anyone see why autovacuum or autoanalyze are not working?


proj02u20411=# select version();
      version
------------------------------------
 PostgreSQL 8.2.3 on i686-pc-mingw32,
 compiled by GCC gcc.exe (GCC) 3.4.2 (mingw-special)
(1 row)

proj02u20411=# explain analyze select * from dev.tag;
                          QUERY PLAN
----------------------------------------------------------
 Seq Scan on tag
  (cost=0.00..810.35 rows=18835 width=166)
  (actual time=510.270..584.418 rows=2696 loops=1)
 Total runtime: 588.207 ms
(2 rows)

proj02u20411=# select *
               from   pg_stat_all_tables
               where  schemaname = 'dev'
               and    relname    = 'tag';
-[ RECORD 1 ]----+--------------------------
relid            | 16800
schemaname       | dev
relname          | tag
seq_scan         | 255
seq_tup_read     | 416689
idx_scan         | 4123
idx_tup_fetch    | 82080
n_tup_ins        | 2585
n_tup_upd        | 10
n_tup_del        | 0
last_vacuum      |
last_autovacuum  |
last_analyze     |
last_autoanalyze | 2007-01-17 17:57:54.33-08


#---------------------------------------------------------------------------
# RUNTIME STATISTICS
#---------------------------------------------------------------------------

# - Query/Index Statistics Collector -

stats_start_collector = on        # needed for block or row stats
                    # (change requires restart)
stats_row_level = on

#---------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#---------------------------------------------------------------------------

autovacuum = on                # enable autovacuum subprocess?
                    # 'on' requires stats_start_collector
                    # and stats_row_level to also be on
autovacuum_naptime = 1min        # time between autovacuum runs
autovacuum_vacuum_threshold = 100    # min # of tuple updates before
                    # vacuum
autovacuum_analyze_threshold = 25    # min # of tuple updates before
                    # analyze
autovacuum_vacuum_scale_factor = 0.002    # fraction of rel size before
                    # vacuum
autovacuum_analyze_scale_factor = 0.001    # fraction of rel size before
                    # analyze
autovacuum_freeze_max_age = 200000000    # maximum XID age before forced vacuum
                    # (change requires restart)
autovacuum_vacuum_cost_delay = -1    # default vacuum cost delay for
                    # autovacuum, -1 means use
                    # vacuum_cost_delay
autovacuum_vacuum_cost_limit = -1    # default vacuum cost limit for
                    # autovacuum, -1 means use
                    # vacuum_cost_limit