After reading on the forum today, I noticed 5.1 was released so I updated and rebooted. Now under maintenance and update, it shows my version is still 5.1.677, and says 5.1.864 is available, but when I try to update, it says I already have the latest version?
Also, not sure if it is related to the update, but MBAM scan freezes every few seconds or so during a quick scan.