If you are using query_posts in your theme for category and you are facing issue with pagination.

Use following code to fix the issue with pagination.

<?php
$paged = (get_query_var(‘paged’)) ? get_query_var(‘paged’) : 1;
$sticky=get_option(‘sticky_posts’);
$args=array(
‘cat’=>3,
‘caller_get_posts’=>1,
‘post__not_in’ => $sticky,
‘paged’=>$paged,
);
query_posts($args);
?>

or use following code.

<?php if (have_posts()) : ?>
<?php query_posts(“cat=3″); ?>
<?php while (have_posts()) : the_post(); ?>

replace with above with this code.

<?php if (have_posts()) : ?>
<?php $paged = (get_query_var(‘paged’)) ? get_query_var(‘paged’) : 1; query_posts(“cat=3&paged=$paged”); ?>
<?php while (have_posts()) : the_post(); ?>

Useful article for query post

http://codex.wordpress.org/Template_Tags/query_posts

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