Sometimes, when I navigate to the Guide tile in media center via my remote, the tile looks like it is being pressed but the navigation goes to Recorded TV and I can't get to the guide in anyway unless I press the Guide Button on the remote or restart Media Center. If I press the Guide button on my remote, everything navigates as it should and I end up in the Guide. Then to problem will go away for awhile.
I think there is some kind of caching going on. I know sometimes if you try to go backwards from the guide you may have to click back several times until you get out to the mainmenu (unless you tap the green button and end up there). People at home are used to navigating around instead of pushing buttons like Guide and the Green Button.
Not a big deal but if you've figured this out, I'd like to know
