Drop obsolete template.php example

This is still an issue with the latest snapshot. I am unable to get this to work with Drupal v. 6.4, this does not work either:

function phptemplate_preprocess_page(&$vars) {
  $vars['tabs2'] = menu_secondary_local_tasks();
  switch($hook) {
    case 'node':
    case 'page':
      if (module_exists('service_links')) {
        $vars['service_links'] = theme('links', service_links_render($vars['node'], TRUE));
      }
      break;
  }
  return $vars;

Thanks for your help hass, however, it did not solve my problem. My node.tpl.php has the following code:
<?php /*stuff*/ <div class="node_sociable"><?php print $service_links ?></div> /*other stuff*/ ?> and my template.php contains the code pasted in my first post. Caches have been cleaned, user permissions are double-checked and Service links preferences are set to display on all node types, yet all that is returned is <div class="node_sociable"></div>.

For future reference, it can be found here.

added examples in template.php long time ago!