WP 2.1.x Next/Previous footer links don’t appear

Since I moved from WP 2.0.7 to WP 2.1 (and now to 2.1.1) the Next / Previous entries links do not appear on my index page, nor my archive pages.

I’m using the following code towards the end of my index.php

<?php comments_template(); // Get wp-comments.php template ?>

<?php endwhile; ?>

<div>
<div class=\"alignleft\"><?php next_posts_link('&laquo; Previous Entries') ?></div>
<div class=\"alignright\"><?php previous_posts_link('Next Entries &raquo;') ?></div>
</div>

	<?php else : ?>

<h2>Not Found</h2>
<p><?php _e(\"Sorry, but you are looking for something that isn't here.\"); ?></p>
<?php endif; ?>

<br />
<br />

</div>

<?php get_footer(); ?>

I know the commands changed on 2.1 to that of 2.0.x; however these that I’ve used have been borrowed from the default 2.1 template.

Any assistance / advice would be gratefully received.

My site is at https://mybloodygreatnutshell.com/

Many thanks in advance.