2.7.1 upgrade is supposed to solve this issue. It appears to be caused by a caching problem.
Here’s a fix to try in the meantime: clear your cookies and cache in your browser. Close all browsers, reopen it and try logging back into your WP Admin. Should solve the issue. Did for me.
See this thread: changing allocation in php.ini and wp-config.php solved the issue for me. Upgrade was a breeze once I did that:
Michael, had this issue. Did #1 and #3 and it took care of the issue. Thanks!
matt
