TUPLES <> HEAP

Hi all. Head hanging a little low, even though system still seems to work
fine. Here is what I did:

- update pg_class set relname = lower(relname);
- update pg_attribute set attname = lower(attname);
- (why did I do that? Following something I read, not really having
problems in the first place and not really knowing the effects).

Now when I vacuum I get the error messages:
NOTICE: Index pg_class_relname_index: NUMBER OF INDEX' TUPLES (108) IS NOT
THE SAME AS HEAP' (82)
NOTICE: Index pg_class_oid_index: NUMBER OF INDEX' TUPLES (108) IS NOT THE
SAME AS HEAP' (82)

I'd like to drop these indexes and re-create them, hoping that would solve
the problem. But I tried to drop them and postgres wouldn't let me -
claiming they were system catalog indexes. Would dropping and recreating
the indexes get rid of the error messages? If so, how can I drop them and
what is the proper way to recreate them?

Newbie mistakes aren't much fun. Thanks for helping. . .

jt