Redirect in a callback of type MENU_CALLBACK

Why doesn't drupal_goto() work in my menu callback?

function _mymodule_mycallback() {
  global $user;

  $nid = arg(1);
  // needed for node_object_prepare
  module_load_include('inc', 'node', 'node.pages'); // needed for node_object_prepare()     
  $new_node = (object) array();
  $new_node->type  = 'auction';
  $new_node->language = '';

  node_object_prepare($new_node);
  node_save($new_node);
  $new_nid = $new_node->nid;

  drupal_goto('node/'.$new_nid, drupal_get_destination()); 

  exit();
}

I always get back t开发者_JAVA技巧o the calling site. I already tried url() and sending headers but it doesn't work.

UPDATE

try an unset($_REQUEST['destination']); (and possibly also an unset($_REQUEST['edit']['destination']) before the call to drupal_goto() if latter doesn't seem to work.

UPDATE END

try just

drupal_goto("node/$new_nid");

(without drupal_get_destination(); also the exit(); is superfluous - see the doc)