Popped in my copy of Inside Man last night and noticed the problem. When I'm watching movies at night, I don't crank the volume so I don't wake anyone up. I use the subtitles in case I miss something that someone said.
So anyways, Inside Man has an invisible box that cuts off the bottom left side of the subtitles. This invisible box is also there when I go into the settings menu. It's hard to explain, but you'll see it immediately if a subtitle plays and there are a lot of words in one conversation. I am using an HD-A1 player with the most recent firmware.