SQL runing very slow after restore

[sam wun]

Hi,

I finally got the backup data ported from mysql 5.0 (from freebsd) to mysql 4.1.10 in
Redhat. Webmin started up and I can browse the data in each table. After installed all
prerequisit perl modules, and start the web gui and start to run some queries, I
expeirence it runs very slow. A sql in mysql 5.0 finsihed in few seconds, but my mysql
4.1.10 takes forever to run. 

I created indexes in mysql 5.0. When doing backup, I use --all-databases and restore it
use command mysql < mysql.sql and mysql < data.sql.

I don't know whether all indexes are rebuilt correctly in the new database (mysql 4.1.10).
How do I know all my previous indexes are in-placed with the restore?

Thanks
Sam