Code for showing only one category in the normal WordPress page-by-page browsing of this blog. All other public posts are obfuscated from default prev/next page browsing.
$paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
query_posts( 'cat=1&paged=' . $paged . '&showposts=' . get_option('posts_per_page') );
?>