berniejr,
Regarding the first of your 2 emails, I had designed this for a remote control, where the up, down, left and right keys would allow you to scroll through the guide. I did not think of a convenient way to jump to another button on the screen, outside of the guide area. So, I put a button on the left mouse-click pop-up that will allow you to go to the main screen. This assumes that the remote you have is configured for a left mouse-click. Of course, as you noted, the Home key works as well.
Regarding the not going to sleep from the full screen, I have not had that problem. I will check a little more and get back if I find something.