Bug? http://drupal.org/node/1140550

hook_menu_local_tasks_alter.bug.php

<?php

/**
 * Implements hook_menu_local_tasks_alter().
 */
function utils_menu_local_tasks_alter(&$data, $router_item, $root_path) {

  // Define the tabs.
  $contact = array(
    '#theme' => 'menu_local_task',
    '#link' => array(
      'title' => t('Say Hello'),
      'href' => 'contact',
      'localized_options' => array(
        'attributes' => array(
          'title' => t('Drop us a line'),
        ),
      ),
    ),
  );
  $quote = array(
    '#theme' => 'menu_local_task',
    '#link' => array(
      'title' => t('Get a Quote'),
      'href' => 'node/50',
      'localized_options' => array(
        'attributes' => array(
          'title' => t('Get a quote'),
        ),
      ),
    ),
  );

  // Get the current path.
  $current_path = current_path();

  // Quote page.
  if ($current_path == 'node/50') {
    // If the 'View' tab is already there, just alter the title.
    if (count($data['tabs'][0]['output'] > 1) && $data['tabs'][0]['output'][0]['#link']['title'] == 'View') {
      $data['tabs'][0]['output'][0]['#link']['type'] = MENU_LOCAL_TASK;
      $data['tabs'][0]['output'][0]['#link']['title'] = 'Get a quote';
    }
    // Add it as a new tab.
    else {
      $data['tabs'][0]['output'][] = $quote;
    }
    // Add the "Contact" tab.
    $data['tabs'][0]['output'][] = $contact;
  }

  // Contact page.
  if ($current_path == 'contact') {
    $data['tabs'][0]['output'][] = $quote;
    $data['tabs'][0]['output'][] = $contact;
  }

  // Manually update the 'count' so that the tabs actually print out.
  // This must be a core bug?
  // @see http://drupal.org/node/1140550
  if (in_array($current_path, array('node/50', 'contact'))) {
    $data['tabs'][0]['count'] = count($data['tabs'][0]['output']);
  }

}