I'm using Postgres 8.1 in Windows XP Sometimes when using pgAdmin the following Guru hint appears suddenly: "Running VACUUM recommended The estimated rowcount on the table "firma1.algsa" deviates significantly from the actual rowcount. You should run VACUUM ANALYZE on this table. Instead of issuing a manual VACUUM ANALYZE command on this table (you can use the pgAdmin III maintenance menu for this), running VACUUM ANALYZE on a regular or automated basis should be considered. This can be achieved using a scheduler. PostgreSQL also supplies the pg_autovacuum daemon, which will track changes made to the database and issue vacuum commands as required automatically. In most cases, pg_autovacuum will be the best choice. " I have noticed in Postgres log, that autovacuum processes my cluster regulary. So in my knowledge, this hint is wrong. Please confirm that guru is stupid. Also I followed this hint and got the results: INFO: vacuuming "firma1.algsa" INFO: index "algsa_pkey" now contains 122 row versions in 2 pages DETAIL: 0 index pages have been deleted, 0 are currently reusable. CPU 0.00s/0.00u sec elapsed 0.06 sec. INFO: "algsa": found 0 removable, 122 nonremovable row versions in 4 pages DETAIL: 0 dead row versions cannot be removed yet. There were 0 unused item pointers. 0 pages are entirely empty. CPU 0.00s/0.00u sec elapsed 0.06 sec. INFO: analyzing "firma1.algsa" INFO: "algsa": scanned 4 of 4 pages, containing 122 live rows and 0 dead rows; 122 rows in sample, 122 estimated total rows So it seems that vacuum did make anything. Andrus. ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster