WordPress runs very slowly if you have many post types (10 and more). The slowness seems proportional to the number of the post types. I have tried to disable the line 55 in intuitive-custom-post-order.php:
add_action( 'admin_init', array( &$this, 'refresh' ) );
Without this hook WordPress works ok, so the problem I think is the "refresh" function.
Is it possible to fix it?