Www.facebook.com - ping display error 302

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I have a Facebook social plugin and Facebook display error 302 with 993ms when page tested. What is the solution?

http://www.webpagetest.org/result/140615_97_673/1/details/

My plugin code :

<body id="theme-default">
<!--START FB Like-->
<div id="fb-root"></div>
<script>(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = "//connect.facebook.net/en_US/all.js#xfbml=1&appId=603935506344919";
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script><!--END FB Like-->


<!-- START FB Like Box -->
<div class="group edge">
<div class="wrap-ribbon left-edge fork stitch lblue"><span>Like THEJOBS on Facebook</span></div>
                    </div>
<div class="fb-like-box" data-href="https://www.facebook.com/thejobs.com.my" data-width="250" data-height="180" data-colorscheme="light"
data-show-faces="true" data-header="false" data-stream="false" data-show-border="false"></div><!-- END FB Like Box -->
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