title: dataTables generating multiple server side requests
body: <p>I am using <a href="http://www.datatables.net/" rel="nofollow noreferrer">dataTable</a> jquery plugin with server side processing enabled. While using <code>fnReloadAjax</code> function, there is a delay of 2-3 seconds between hiding of the processing div and display of the new data. Here is a <a href="https://stackoverflow.com/q/14009561/456135">post</a> regarding this problem.
  I found out that this is due to multiple server requests made by datatable.</p>
  <p>In my page <code>onchange</code> event of a set of radio buttons is making a call to server for new data as follows</p>
  <pre><code>oTable.fnReloadAjax(&quot;getCaseList?caseStatus=xxx&amp;showValidOnly=true&quot;);
  </code></pre>
  <p>In the firebug console I see two requests being made one after the other</p>
  <ol>
  <li><code>GET https://localhost/getCaseList?caseStatus=xxx&amp;showValidOnly=true&amp;_=1363611652185</code></li>
  <li><code>GET https://localhost/getCaseList?caseStatus=xxx&amp;showValidOnly=true&amp;sEcho=4&amp;iColumns=9&amp;sColumns=&amp;iDisplayStart=0&amp;iDisplayLength=100&amp;sSearch=&amp;bRegex=false&amp;sSearch_0=&amp;bRegex_0=false&amp;bSearchable_0=true&amp;sSearch_1=&amp;bRegex_1=false&amp;bSearchable_1=true&amp;sSearch_2=&amp;bRegex_2=false&amp;bSearchable_2=true&amp;sSearch_3=&amp;bRegex_3=false&amp;bSearchable_3=true&amp;sSearch_4=&amp;bRegex_4=false&amp;bSearchable_4=true&amp;sSearch_5=&amp;bRegex_5=false&amp;bSearchable_5=true&amp;sSearch_6=&amp;bRegex_6=false&amp;bSearchable_6=true&amp;sSearch_7=&amp;bRegex_7=false&amp;bSearchable_7=true&amp;sSearch_8=&amp;bRegex_8=false&amp;bSearchable_8=true&amp;iSortingCols=1&amp;iSortCol_0=4&amp;sSortDir_0=desc&amp;bSortable_0=false&amp;bSortable_1=true&amp;bSortable_2=true&amp;bSortable_3=true&amp;bSortable_4=true&amp;bSortable_5=true&amp;bSortable_6=true&amp;bSortable_7=true&amp;bSortable_8=true&amp;_=1363611701804</code></li>
  </ol>
  <p>The processing div is getting hidden after the completion of first request but new data is loaded only after the second request is complete.</p>
  <p>Why is datatable making that second extra call?</p>