Page Load Time: admin-ajax.php

Hi everyone,

working on the optimization of my page load time, I’ve discovered using this tool:

http://www.yottaa.com/url/www-clubpronostics-com-4d7f28fd3820761bb8000003/page_load

that admin-ajax.php loads at the same time with my blog, which seems not to be normal, and adds 1/2 sec to the overall page load time.

Can someone tell me what’s wrong?

Many thanks in advance

David