Probleme mit Pagination

<?php get_header(); ?>
    <div id="content" class="narrowcolumn">
    
<?php if (function_exists('ls_getinfo')) : ?>
      <?php if (ls_getinfo('isref')) { ?>
        <div class="landingsites">
          <h2>Ihre Suche nach: <?php ls_getinfo('terms'); ?></h2>
          <p>Sie kommen von <?php ls_getinfo('referrer'); ?> und suchen nach <em><?php ls_getinfo('terms'); ?></em>. Folgende Beitr&auml;ge k&ouml;nnten von Interesse f&uuml;r Sie sein:</p>
          <ul>
          <?php ls_related(5, 10, '<li>', '', '', '', false, false); ?>
          </ul>
        </div>
      <?php } ?>
    <?php endif; ?>
    
<?php if (is_home()) { query_posts("cat=-21"); } ?> 
    <?php if (have_posts()) : ?>


        <?php while (have_posts()) : the_post(); ?>
            <div class="datum"><?php the_date('d M y') ?></div>
            <div class="post">
                <div class="zeit">
                 <?php the_time('H') ?><br />
                 <?php the_time('i') ?>
                </div>
                <h2 id="post-<?php the_ID(); ?>"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php the_title(); ?></a>&nbsp;&nbsp;<span><?php comments_popup_link('0', '1', '%'); ?> <?php edit_post_link('e','',''); ?></span></h2>
                <small>Kategorie: <?php the_category(', ') ?></small>


                <div class="entry">
                    <?php the_content('Weiterlesen &raquo;'); ?>
                </div>
                <!--
                <?php trackback_rdf(); ?>
                -->
            </div>


        <?php endwhile; ?>


        <div class="navigation">
        <?php wp_pagebar(array('before'=>'Page: ', 'after'=>' ', 'tooltip'=>true, 'tooltip_text'=>'Page'))?>
        </div>


    <?php else : ?>


        <h2 class="center">Not Found</h2>
        <p class="center"><?php _e("Sorry, but you are looking for something that isn't here."); ?></p>
        <?php include (TEMPLATEPATH . "/searchform.php"); ?>
    <ul>
        <li><?php if(function_exists(wp_onlinecounter)) { wp_onlinecounter(); } ?></li>
        </ul>


    <?php endif; ?>


    </div>


<?php get_footer(); ?>