Having my 65 just going out of the 1-year part of the warranty, Amazon VOD started "scrambling" the display. Everything appears to work normal otherwise, though.
Easy to spot, it happens right after the "Screen loading" message after launching "A-VOD". Of course I'm at the latest FW (1.56, I think). And power cycling nor ejecting the inserted disc helped. So I started reading this thread and one thing caught my eye -- Quick Start!
I theorized (hoped!) that having Quick Start on does not actually shut down the 65, so it would not clear out whatever running code causes my screen to scramble.
The theory seems to be valid as turning off Quick Start and power cycling (I also waited 30s before power-on) did the trick. Thought I'd post this here, if anything to help me the next time it happens.
And the 65's working MUCH better than the Sammy BD-P1600 and it's FW issues and ultra-slow loading times, so no need to run out and get a x10 series.