The <div> loops automatically and not able to control it

Last time i had some problem in my code, by now i have fixed the problem but there is one more problem exixting.
Here in my code, the main <div> automatically loops 5 times showing the same list of elements 5 timee. I am unable to find out what has caused the loop. On inspecting the element, i came to know that the main loop i.e. <div class="row-fluid"> loops for 5 times. Where is the problem and how can i solve it?
Really need help.

Thank u in advance.

<?php if ($cat == 2900) { ?>
  <div class="row-fluid">
   <div class="span12 featured-block"> 
    <?php $block1Featured= new WP_Query( 'cat=2900' );
     if ( $block1Featured->have_posts() ) : ?>
      <?php while($block1Featured->have_posts()): $block1Featured->the_post(); ?>
        <div class="span6 ">
        <a class="featured_image" href="<?php the_permalink();?> "target="_blank">
         <?php if ((function_exists('has_post_thumbnail')) && (has_post_thumbnail())  ) { 
           $image_id = get_post_thumbnail_id(); 
           $image_url = wp_get_attachment_image_src($image_id,'large');
           $image_url = $image_url[0];
           if(!@getimagesize($image_url)){
           $image_url = "/wp-content/uploads/2014/02/logo2.jpg";
           } 
           $blogurl = get_bloginfo('url'); 
           $image_url = str_replace($blogurl, '', $image_url);
          ?>

           <img src="<?php echo bloginfo('template_url'); ?>/thumb.php?src=<?php echo ($image_url); ?>&amp;w=390&amp;h=216&amp;zc=1&amp;q=100" alt="<?php echo the_title(); ?>" />

         <?php }else{ ?> 


           <img src="<?php echo bloginfo('template_url'); ?>/thumb.php?src=<?php echo "http://www.nepaljapan.com/wp-content/uploads/2014/02/logo2.jpg"; ?>&amp;w=390&amp;h=216&amp;zc=1&amp;q=100" alt="<?php echo the_title(); ?>" />


         <?php }?>
        </a>

    <a href="<?php the_permalink();?>" target="_blank">
    <h2><?php the_title(); ?></h2></a>
    <p><?php echo excerpt(37); ?> </p>
    </div>
    <?php endwhile; ?>

    <?php wp_reset_postdata(); ?>
<?php else:  ?>
<p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
<?php endif; ?>

  </div>
  </div>

<?php } ?>

<?php }else{ ?>
//else contents
<?php } ?>