New behavior in 7.0

Hello,
    I've worked with 6.5.3 and few other older versions. I've never
had this happen before. Can some one give some explaination?

Script started on Tue May 30 01:11:29 2000
bash-2.03$ psql -d sprawlsr -c "vacuum"
NOTICE:  Skipping "pg_type" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_attribute" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_proc" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_class" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_indexes" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_group" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_database" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_attrdef" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_relcheck" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_trigger" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_inherits" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_index" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_statistic" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_operator" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_opclass" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_am" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_amop" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_amproc" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_language" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_aggregate" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_ipl" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_inheritproc" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_rewrite" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_listener" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_description" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_shadow" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_user" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_rules" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_views" --- only table owner can VACUUM it
NOTICE:  Skipping "pg_tables" --- only table owner can VACUUM it
VACUUM
bash-2.03$ exit
exit

Script done on Tue May 30 01:11:47 2000

Thanks,
Robert