navigation disappears when using query_posts

<?php
/*
Template Name: pagina index
*/
?>

<?php get_header(); ?>

<?php get_sidebar(); ?>

     <div id="news">
     <h2><img src="<?php bloginfo('template_directory'); ?>/images/news.png"  alt="news" /></h2>

<div class="breadcrumbs">
    <?php if(function_exists('bcn_display'))
    {
        bcn_display();
    }?>
</div>

     <!-- Start the Loop. -->
     <?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1; query_posts("cat=-42&paged=$paged"); ?>
        <?php while (have_posts()) : the_post(); ?>

             <div class="entry">


 <!-- Display the Title as a link to the Post's permalink. -->
 <h3><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h3>
 <small class="articletitle">Scritto il <?php the_time('jS F, Y'); ?></small>

 <!-- Display the Time. -->


 <!-- Display the Post's Content in a div box. -->
<div class="entrycontent">
   <?php the_content(); ?>
   <div class="commenti" > <a href="<?php comments_link(); ?> ">Lascia un commento </a></div>
 </div>

 </div>


 <!-- Stop The Loop (but note the "else:" - see next line). -->
 <?php endwhile; ?>


      <div id="navbox">


     <?php if(function_exists('wp_page_numbers')) { wp_page_numbers(); } ?>


        </div>

   </div>


<?php get_footer(); ?>

      </div>



<div id="bordosotto"> </div>
</body>
</html>