wordpress pagination

if (is_page() ) {
$category = get_post_meta($posts[0]->ID, 'category', true);
}
if ($category) {
  $cat = get_cat_ID($category);
  $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
  $post_per_page = 2; // -1 shows all posts
  $do_not_show_stickies = 1; // 0 to show stickies
  $args=array(
    'category__in' => array($cat),
    'orderby' => 'date',
    'order' => 'DESC',
    'paged' => $paged,
    'posts_per_page' => $post_per_page,
    'caller_get_posts' => $do_not_show_stickies,
  );
  $temp = $wp_query;  // assign orginal query to temp variable for later use
  $wp_query = null;
  $wp_query = new WP_Query($args);
  if( have_posts() ) :
        while ($wp_query->have_posts()) : $wp_query->the_post(); ?>

-------------Post get displayed here---------

    <?php endwhile; ?>

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

<?php else : ?>

        <h2 class="center">Not Found</h2>
        <p class="center">Sorry, but you are looking for something that isn't here.</p>
        <?php get_search_form(); ?>

    <?php endif;

    $wp_query = $temp;  //reset back to original query

}  // if ($category)