Ah, ha. Now I clicked another button and have been told to key the following information into support in the hope that someone can help.
wp_usermeta: 2 clients are using or haven't closed the table properly
wp_posts: 1 client is using or hasn't closed the table properly
wp_options: Table is marked as crashed
wp_postmeta: 2 clients are using or haven't closed the table properly
wp_term_taxonomy: 1 client is using or hasn't closed the table properly
wp_term_relationships: 1 client is using or hasn't closed the table properly
