using index "pg_toast_..." despite IgnoreSystemIndexes

Hi

After an upgrade to 8.4.12 from 8.4.10 we vacuum/analyzed the db.
Postgres is running in standalone mode at this point.

vacuumdb --echo --analyze --all --verbose -U sysdba

07/31/12 04:09:57 INFO: analyzing
"information_schema.sql_features"
07/31/12 04:09:57 INFO: "sql_features": scanned 7 of 7 pages,
containing 649 live rows and 0 dead rows; 649 rows in sample, 649
estimated total rows
07/31/12 04:09:57 WARNING: using index "pg_toast_2619_index"
despite IgnoreSystemIndexes
07/31/12 04:09:57 WARNING: using index "pg_toast_2619_index"
despite IgnoreSystemIndexes
07/31/12 04:09:57 WARNING: using index "pg_toast_2619_index"
despite IgnoreSystemIndexes
07/31/12 04:09:57 WARNING: using index "pg_toast_2619_index"
despite IgnoreSystemIndexes
07/31/12 04:09:57 INFO: vacuuming
"information_schema.sql_implementation_info"
07/31/12 04:09:57 INFO: "sql_implementation_info": found 0
removable, 12 nonremovable row versions in 1 out of 1 pages
07/31/12 04:09:57 DETAIL: 0 dead row versions cannot be removed
yet.
07/31/12 04:09:57 There were 1 unused item pointers.
07/31/12 04:09:57 0 pages are entirely empty.
07/31/12 04:09:57 CPU 0.00s/0.00u sec elapsed 0.00 sec.
07/31/12 04:09:57 INFO: vacuuming "pg_toast.pg_toast_11452"

I see the warning generated in systable_beginscan_ordered as a
warning, and then it proceeds to do the work anyway.

It appears as if this is benign. Is that the case?

Thanks