1) OK - I took the code mentioned above ---
add_action( 'init', 'my_deregister_heartbeat', 1 );
function my_deregister_heartbeat() {
global $pagenow;
if ( 'post.php' != $pagenow && 'post-new.php' != $pagenow )
wp_deregister_script('heartbeat');
}
2) pasted it into my functions file
3) ran a speed test at pingdom http://tools.pingdom.com/fpt/#!/ejOa0r/http://www.halfpipelondon.com/product-category/bike/bicycles/womens-bicycles/
4) still getting this ajax problem
5) anyone got more ideas
Ian