All in one SEO > Performance
At the very bottom of "system status" there is a blue "check for updates" button. When this is clicked I get the following error:
Fatal error: Call to a member function checkForUpdates() on a non-object in /home/xxxxx/public_html/xxxxx/wp-content/plugins/all-in-one-seo-pack/aioseop_performance.php on line 227
Not sure if you are aware of this error, or in the process of fixing it?