Nope. CM7 has a Honeycomb-like MENU and BACK button up in the extreme right-hand side of the status bar up top. The ONLY problem I have is when something goes full-screen--but for that, I use the Nook's "N" (HOME) key to back-out to the desktop again. Eventually, Android will kill the app if you're not using it and you need the memory so there's no performance hit either.