title: Adding JQuery validation script to header causes the action methods to fire twice
body: <p>On any MVC sample application , adding    @Scripts.Render("~/bundles/jqueryVal") to the header causes the action method on any link to execute twice.</p>
  
  <p>I have put down the sample header for reference.  Can some explain why this might happen ?
   If I remove the @Scripts.Render("~/bundles/jqueryVal") tag, action methods behave fine.</p>
  
  <pre><code> &lt;head&gt;
          &lt;meta charset="utf-8" /&gt;
          &lt;title&gt;Cool Blogger&lt;/title&gt;
          &lt;meta name="viewport" content="width=device-width" /&gt;
          &lt;script type="text/javascript" src="~/Scripts/jquery-1.8.2.min.js" &gt;&lt;/script&gt;
          &lt;script type="text/javascript" src="~/Scripts/jquery-ui-1.8.24.js" &gt;&lt;/script&gt;
          &lt;script type="text/javascript" src="~/Scripts/jquery.unobtrusive-ajax.min.js"&gt;&lt;/script&gt;
          @Styles.Render("~/Content/css")
          @Scripts.Render("~/bundles/modernizr")
          @Scripts.Render("~/bundles/jquery")
          @Scripts.Render("~/bundles/jqueryVal")
      &lt;/head&gt;
  </code></pre>