Make the navigation of a single post page to work

In the wordpress codex, the format of previous post link is:
<?php previous_post_link($format, $link, $in_same_cat = false, $excluded_categories = ''); ?>
Respectively for the next post will be:
<?php next_post_link($format, $link, $in_same_cat = false, $excluded_categories = ''); ?>
Example:
<?php previous_post_link('<strong>%link</strong>', '<< Previous', TRUE, '5'); ?>
<?php next_post_link('<strong>%link</strong>', 'Next >>', TRUE, '5'); ?>

How to fix missed schedule in wordpress 3

First add follow code to wp_config.php in your root directory.

define(‘ALTERNATE_WP_CRON’, true);

This is wordpress alternative cron mode.

Second step is editing cron interval in includes/cron.php in line 245-246.

current is:

$cron_url = get_option( ‘siteurl’ ) . ‘/wp-cron.php?doing_wp_cron’;

wp_remote_post( $cron_url, array(‘timeout’ => 0.01, ‘blocking’ => false, ‘sslverify’ => apply_filters(‘https_local_ssl_verify’, true)) );

change it to:

$cron_url = get_option( ‘siteurl’ ) . ‘/wp-cron.php?doing_wp_cron’;

wp_remote_post( $cron_url, array(‘timeout’ => 5.00, ‘blocking’ => false, ‘sslverify’ => apply_filters(‘https_local_ssl_verify’, true)) );

That is all. Works for me.