Update dw-focus-slider on post insert.

Hi,
I guess currently this class “dw_focus_top_posts” uses couple of caches to get/save post lists, and it has following action in it’s “__construct” function.
add_action( ‘save_post’, array(&$this, ‘flush_widget_cache’) );
add_action( ‘deleted_post’, array(&$this, ‘flush_widget_cache’) );
add_action( ‘switch_theme’, array(&$this, ‘flush_widget_cache’) );
 
When I insert the posts using “wp_insert_post” function,  this slider does not get updated with inserted post. Will it help if I add following actions along with above three actions ?
add_action( ‘new_to_publish’, array(&$this, ‘flush_widget_cache’) );
add_action( ‘insert_post’, array(&$this, ‘flush_widget_cache’) );

please advice. I tried to put “wp_cache_delete(‘widget_recent_posts’, ‘widget’);” right after my “wp_insert_post” code but it seems not working.