<?php get_header(); ?>
<div id="content" >
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<div class="box <?php if (++$counter % 2 == 0) { echo "lastbox"; }?>" id="post-<?php the_ID(); ?>" >
<div class="entry">
<a href="<?php the_permalink() ?>"><img class="boxim" src="<?php bloginfo('stylesheet_directory'); ?>/timthumb.php?src=<?php get_image_url(); ?>&h=125&w=300&zc=1" alt=""/></a>
<h2><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title(); ?>"><?php echo substr($post->post_title,0,30); ?></a></h2>
<p><?php the_content_rss('', TRUE, '', 30); ?></p>
</div>
<div class='clear'></div>
</div>
<?php endwhile; ?>
<div class="clear"></div>
<div id="navigation">
<?php if(function_exists('wp_pagenavi')) : ?>
<?php wp_pagenavi() ?>
<?php else : ?>
<div class="alignleft"><?php next_posts_link(__('« Older Entries','arclite')) ?></div>
<div class="alignright"><?php previous_posts_link(__('Newer Entries »','arclite')) ?></div>
<div class="clear"></div>
<?php endif; ?>
</div>
<?php else : ?>
<h1 class="title">Not Found</h1>
<p>Sorry, but you are looking for something that isn't here.</p>
<?php endif; ?>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>
Eu modifiquei bastante este ficheiro, deve ser por isso, podem ver se tem algum erro?