WPTouch issues with WordPress 3.1.2

My portfolio page was working just fine on a mobile device until I upgraded to WordPress 3.1.2. Now the page does not display the full content.
What is weird is that the same code works fine for the desktop version but not for the mobile version anymore. Check the link to see the difference: http://web-kreation.com/portfolio/

My (simplified) code is:

<?php
if (have_posts()) :
query_posts('posts_per_page=1&cat=129&paged=' . $paged);
while (have_posts()) : the_post();
?>

<?php the_title(); ?>
<?php the_content(); ?>
<?php $ptfImgBig = get_post_meta($post->ID, "Portfolio Image Big", $single = true); if($ptfImgBig !== '') { ?>
<div class="ptf-big-img"><?php echo $ptfImgBig; ?></div>
<?php } $page_num =  $page_num + 1; ?>

<?php endwhile; endif; ?>