I have verified that UFO Showtime locks all 5Ks with 1.3 or 1.4 firmware. My spare came back from Sammy repair today and has the same issues as my original. I was however unable to get the Cream HD to audio skip/sputter on either player this evening, but the new just repaired player audio drops on Hancock just like the other one at almost the exact same spots. I'm almost convinced that the Cream audio drop issue might be interrelated with my receiver since i played a couple BDs prior to HDs since BDs were what were not playing on the spare when I first bought it, but both were power cycled after, but not the receiver. Very strange behavior.
This was the most wonderful repair experience I have ever had. Samsung's communication through the whole process was stellar with great updates at every step of the process. It did take a couple days to ship which I don't know was due to backlog or if it was quality control related. Had this been a main unit with no backup or spare I would probably be singing a different tune, but I haven't been watching much HD/BD recently, I have been watching alot of TV, HD On Demand and regular DVD, all of which I have many options for.
Oh and I think I forgot to report that my problems with UFO Showtime were related to a dirty lens in my A35. I ran a couple lens cleaners through it after I got a replacement UFO and all is well with both discs. Too bad it won't play on the Sammy. That is the only disc I own that I can't get to play on it.