Is it good to have toast table for information schema table?

Hi,

Is it good to have toast table for information schema table? I am using
Postgresql 8.4 and current state is:

*select datname, datfrozenxid from pg_database; *
datname | datfrozenxid
-----------+--------------
template1 | 1462730397
template0 | 1462741467
postgres | 1562754912
jangles | 1459615432
(4 rows)

*select * from pg_class where relfrozenxid = 1459615432;*
relname | reltoastidxid | relhasindex | relfrozenxid
----------------+---------------+-------------+--------------
pg_toast_11447 | 11451 | t | 1459615432
(1 row)

*select 11447::regclass; *
regclass
---------------------------------
information_schema.sql_features
(1 row)

Please advice.

Thanks.