The freeze/pause problem has affected both the 60 and 80. I played 10 or 12 blu-rays on my 80 perfectly before I had any freezes, then I started having freezes on 3 out 4 blu-rays, usually 5 to 7 seconds each.
I don't think heat is the problem--at least in my case. My 80 was on an open shelf, well ventilated, where the room temperature remains about 68 degrees. I never stack equipment. Also some freezes would occur 5 minutes into a movie, hardly enough time to heat up excessively.
I would encourage everybody to keep posting about problems. It's the only way to find them and potentially solve them. Look what we have learned about the 60/80. Freezes have occurred on machines manufactured from January thru April 2009 (maybe more), they are random, non repeatable, happen with both new dics as well as rentals. If it was firmware, I would think we would see them more widespread. The only way Panasonic can fix it is if they know about it. And if yours starts freezing, please post about. By the way, when was your 80 manufactured?
Anyway, I think this thread is pretty well balanced.