Din
Cod PHP:
<?php previous_post('<div class="left"><span>«</span> %</div>','','yes') ?>
<?php next_post('<div class="right">% <span>»</span></div>','','yes') ?>
in
Cod PHP:
<div class="left"><?php next_posts_link('<span>«</span> '.__('%title','k2_domain').''); ?></div>
<div class="right"><?php previous_posts_link(''.__('%title','k2_domain').' <span>»</span>'); ?></div>
Imi arata exact acelasi lucru 
Am ajuns la concluzia ca trebe modificat ceva aici :
Cod PHP:
function previous_post_link($format='« %link', $link='%title', $in_same_cat = false, $excluded_categories = '') {
if ( is_attachment() )
$post = & get_post($GLOBALS['post']->post_parent);
else
$post = get_previous_post($in_same_cat, $excluded_categories);
if ( !$post )
return;
$title = apply_filters('the_title', $post->post_title, $post);
$string = '<a href="'.get_permalink($post->ID).'">';
$link = str_replace('%title', $title, $link);
$link = $pre . $string . $link . '</a>';
$format = str_replace('%link', $link, $format);
echo $format;
}