SQL_CALC_FOUND_ROWS Sever load issues

Hello,

When I’ve updated WordPress & coauthor plus to last version, my server gets overloaded with these slow querys:

Query Copying SELECT SQL_CALC_FOUND_ROWS wp_posts.ID FROM wp_posts LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) LEFT JOIN wp_term_relations

When I deactive the plugin coauthor plus server work fine.

Regards