You learn something new every day. I have a Sony DVP NS755V DVD player that I've always thought was pretty useable, although old. But I've always noticed those little 'freezes', only I always thought it was a finger print on the DVD or something like that halting playback for a second while it gained it's composure. Wow, so that's a 'layer break' then eh? Well now I'll know what's going on when that little pause inturupts things.
Amazing how many times you can experience something and have absolutely no idea what it is until someone else mentions it.