Navigating through the on screen (on tv)'menu for on demand is incredibly frustrating. I think I must be missing something obvious. I push the On Demand button on my remote and go to a main menu for on demand. Fine. But as soon as I choose one of the categories from that menu, I can not get back to that main screen again. There's no back buttton. The On Demand button my my remote no longer works, and the menu button on my remote just returns me to the current page, where I no longer want to be. I have to go all the way back to live tv and THEN back into On Demand to get back to the main screen. And this same problem occurs from multiple places within the on demand menu-- NO WAY TO GO BACK TO THE PREVIOUS SCREEN. Is my remote broken? Is there an obvious button that I not using? Or is the on demand navigation really this bad? Please help!