Since upgrading to WP 3.0.1, a couple of my sites no longer display the update link to 3.02/3.03 on the Dashboard or on the Updates page. On one site, I tried re-applying permissions, but this didn’t change a thing.
There are no plugins related to ‘hiding’ update/nag messages.
All the sites have been around since 2.7.
Try flushing out the transient data(options prefixed with
_site_transient_update_
– wp_options table), WP will recreate them for you anyway.Not always a solution but tends to work for me when i have that problem.
You can do this by adding the following lines to your current theme’s functions.php (in wp-content/themes/YOURTHEME/functions.php).
NOTE: You probably only need the first one, but i usually flush them all if i’m flushing one(can’t hurt to have a refresh).
Load any page up once, admin page, post page, whatever, then remove the code(it only needs to run for one page load).