Database Questions

My webhost has alerted me that there seem to be some inconsistencies with some tables in the flynax database.

Most of the tables are of MyISAM type while two are of InnoDB.

I am asking because my site seems to load very, very slowly and lately the server loads have gone beyond 20 when before it was always between 1 - 2.

Are the tables being of InnoDB correct? These two tables are using InnoDB are : class_products and class_users.

And the category filter plugin tables are using latin1_swedish_ci as Collation instead of what the rest are using, utf8_general_ci. These tables are: category filter, category_filter_field and category_filter_relation.

Thank you in advance!