authorbox not showing on the blog’s archives page

WP 2.8.6
the archives page is the archives.php that has the same structure of

header
sidebar
footer

like all my other pages. but only on the archives page the authorbox has no text and the gravatar isn’t loading. everything else works prefect.

its like these wordpress stantard FUNCTIONS will not execute in the archives.php.

this is the author box code

<div id="authorbox">
			   <?php if (function_exists('get_avatar')) { echo get_avatar(get_the_author_meta('user_email'), '80'); }?>
			   <div>
			      <h4>????? <a href="<?php the_author_meta('user_url'); ?>"><?php the_author_meta('display_name'); ?></a></h4>
			      <p><?php $author_desc = get_the_author_meta('description'); echo ''.substr($author_desc,0,200);?></p>

			   </div>
			</div>

i hope you can help