Help CI Pagination not determining URI Segment

[eluser]micha8l[/eluser]
I'm having trouble getting pagination to work. In the manual it says, "The pagination function automatically determines which segment of your URI contains the page number. If you need something different you can specify it."

Okay, so I omit this preference, and then it does not determine the page number... so anyone know how it automatically determines the page number... is it by placement e.g., does the pagination segment need to be at the end or the URL like http://example.com/controller/action/page/1 or is it by the name given to the segment?

Here's my code:
Model

Code:

public function paginate_comments($base_url, $article_id, $per_page, $pending = 'no')
    {
$this->pagination->initialize(array(
     'base_url' => $base_url,
     'total_rows' => $this->db->get_where('crubs_articles_comments', array('article_id' => $article_id, 'comment_pending' => $pending))->num_rows(),
     'per_page' => $per_page,
     'num_links' => 5,
     'cur_tag_open' => ' <strong>&lt; ',
     'cur_tag_close' => ' &gt;</strong>',
));
$links = $this->pagination->create_links();
return ( ! empty($links))? $links : 0;
    }

View

Code:

<?php if(isset($comment_pagination) AND $comment_pagination): echo $comment_pagination; endif; ?>

Controller

Code:

public function pending()
    {
$this->_is_logged_in('view pending comments.', 'articles/login', current_url());
$this->_is_author_registered('view pending comments.', 'authors/register', current_url());
$this->load->model(array('articles_categories_model', 'articles_model', 'articles_comments_model'));
$this->load->library('partial');
$this->_set_ids('no', TRUE, 3, 4);
$actions = $this->uri->uri_to_assoc(5, array('approve', 'disapprove', 'page', 'order'));
$offset = ($actions['page'])? (int) $actions['page'] : 0;
$current_url = base_url('articles/pending') . '/' . $this->uri->segment(3) . '/' . $this->uri->segment(4);
$order_url = $current_url;
$pagination_url = $current_url;

if($actions['approve'])
{
     $this->articles_comments_model->update_comment($actions['approve']);
}
else if($actions['disapprove'])
{
     $this->articles_comments_model->delete_comment($actions['disapprove']);
}

if($actions['page'])
{
     $order_url .= '/page/' . $offset;
}

switch ($actions['order']) {
     case 'author':
  $actions['order'] = 'crubs_authors.author_username';
  $pagination_url .= '/order/author';
  break;

     case 'comment':
  $actions['order'] = 'crubs_articles_comments.comment_date_created';
  $pagination_url .= '/order/comment';
  break;

     case 'article':
  $actions['order'] = 'crubs_articles.article_title';
  $pagination_url .= '/order/article';
  break;

     default:
  $actions['order'] = 'crubs_articles_comments.comment_date_created';
  break;
}

$this->partial->replace(array(
     'centre' => array(
  'articles/pending' => array(
      'pending_comments' => $this->articles_comments_model->read_pending_comments(ART_ID, $actions['order'], $offset),
      'comment_pagination' => $this->articles_comments_model->paginate_comments($pagination_url . '/page/', ART_ID, 4, 'yes'),
      'order_url' => $order_url,
  ),
     ),
));

return $this->layout_one_column();
    }