Why isn’t this sorting by category?

hippievstony.com

I have the following code in index.php to sort my posts by category into two divs floated left and right

index.php:

<?php
get_header ();
?>
<div id="box">
    <div id="left">
    <?php $my_query = new WP_Query ( 'category_name=tony&showposts=3' );
    while ( $my_query->have_posts () ) :
        $my_query->the_post ();
        $do_not_duplicate = $post->ID;
    endwhile;    /*end tony post while*/
    if (have_posts ()) :
         while ( have_posts () ) :
            the_post ();
    ?>
        <div class="post">
        <h3>
        <a href="<?php the_permalink ();?>"><?php the_title ();?></a>
        </h3>
            <div class="entry">
                <?php the_content ();?>
            </div><!-- end entry div -->
        </div><!-- end post div -->
<?php
endwhile;/*end tony while have posts*/
endif; /*end of tony have posts*/
?>
    </div><!-- End Left Div -->

    <div id="right">
    <?php
    $my_query = new WP_Query ( 'category_name=hippie&showposts=3' );
    while ( $my_query->have_posts () ) :
        $my_query->the_post ();
        $do_not_duplicate = $post->ID;
    endwhile;/*end hippie post while*/
    if (have_posts ()) :
        while ( have_posts () ) :
            the_post ();
      ?>
        <div class="post">
        <h3>
        <a href="<?php the_permalink ();?>"><?php the_title ();?></a>
        </h3>
            <div class="entry">
                <?php the_content ();?>
            </div><!-- end entry div -->

        </div><!-- end post div -->
<?php
endwhile;/*end hippie while have posts*/
endif; /*end of hippie have posts*/
?>
    </div><!-- End Right Div -->
</div><!-- end box div -->
<?php
get_sidebar ();
get_footer ();
?>

it outputs all posts to both divs instead of dividing them by category. Can anyone spot the problem? Thanks a lot