When I upgrade WordPress (just went to 3.4.2) I have the the following issue:
Database Update Required
WordPress has been updated! Before we send you on your way, we have to update your database to the newest version.
The update process may take a little while, so please be patient.
Update WordPress Database
So I click “Update WordPress Database” and then see:
Your WordPress database has been successfully updated!
I then click “Continue” and it loops back to the first message! Argh!
Here is the fix:
It is apparently a caching problem with Google Chrome. Go to Settings | History | Clear all browsing data. Select “Empty the cache” and “delete cookies and other site and plug-in data”. Select “the past hour”. Click “Clear browsing data”. Done.