lastraw on "previous link in category showing same current posts"

Thanks, it's a category template and works now with

<?php 

		// posts from category 'life'
		global $wp_query;
		$args = array_merge( $wp_query->query, array( 'category_name'=>'life' ) );
		query_posts( $args );
		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><!-- #entry -->

        </div><!-- #post -->

		<?php endwhile; ?>

		<?php endif; ?>

        	<div class="navigation">

			<?php posts_nav_link(); ?>

            </div><!-- #navigation -->

It works, but is it "right"?