Post Navigation Not Working In Blog Template – Redirecting to same page with correct URI

by

You would need to account for pagination in your query….
something like:

<?php query_posts( array(  
      'cat' => '-4,-11', 
      'paged' => ( get_query_var('paged') ? get_query_var('paged') : 1 ), 
 )); 
?>

http://www.rvoodoo.com/projects/wordpress/wordpress-tip-fixing-pagination-on-custom-queries-with-query_posts/