When I installed that update, it didn't happen to me at rehearsal, or at home. It happened at a show. So I wonder if its some odd power thing? If the AC isn't regulated properly it could mess with the power signal from the remote? I dunno just throwing stuff out there. Putting the experimental OS on the head now and gonna mess with it.
That was the first thing I thought when it happens to me: before chrismas had a gig and it happens 3 times, and 3 times I needed to reboot. Because the Stage was in front of me in the stage I used a different langer powercord. In januari it happens on a rehearsal and on a gig 1 time. For now 1 1/2 month no problem!