Looks like your TV's overscan is a bit more than mine. And there's a lot more room on the left and right of the subs than you see on either one of your images posted.

I'm looking into the other issue you mentioned right now.

--edit--

Yep, that's the layer break. It doesn't show up on the player in my bedroom, but it does show up on the one in the living room. It's pretty awkward, actually - it's smack in the middle of Vader's line ("Rebellion").

I think that imgburn, or whichever program you used, just slapped the layer break in the exact middle of the film, instead of preserving the actual GOUT layer break (which is immediately after Tarkin's "one swift stroke" line, IIRC).