I recently upgraded my blog to WordPress 3.x and everything seemed to go smoothly with the process. But after upgraded when I go to the WordPress admin, I still get the upgrade page, and message show like:
No Upgrade Required
Your WordPress database is already up-to-date!
When I clicking the “Continue” button it sent into a loop.
After much troubleshooting, the solution for fix the “No Update Required –Your WordPress database is already up-to-date!” looping. I have re-upload all files & folders except the wp-content folder from a fresh download of WordPress.