title: Error in cURL request: name lookup timed out
body: <p>I wrote some code that fill a login form and submit it via post method. Like:</p>
  
  <pre><code>    $config = array(
          'adapter' =&gt; 'Zend_Http_Client_Adapter_Curl',
      );      
  
      $this-&gt;siteObj = new Zend_Http_Client('http://example.com', $config);
      $this-&gt;siteObj-&gt;setCookieJar();
      $this-&gt;siteObj-&gt;setUri('http://example.com/login');
      $this-&gt;siteObj-&gt;setParameterPost( 'data[User][name]', 'user' );
      $this-&gt;siteObj-&gt;setParameterPost( 'data[User][password]', 'password' );
      $response = $this-&gt;siteObj-&gt;request('POST');
  </code></pre>
  
  <p>its works fine, but some times this error occur:</p>
  
  <pre><code>Error in cURL request: name lookup timed out
  
  Error: An Internal Error Has Occurred.
  </code></pre>
  
  <p>whats the problem? what can I do to solve it?</p>