I just got my motorola droid replaced today due to a hot pixel. Something I noticed after the replacement that I'm not quite sure if it was an issue before. The bottom buttons light up when I turn the phone on, and they are turned on while on the home screen. But... when I'm browsing the web in the browser, the home screens don't light up even after I've pressed them. I can press the menu button, select something, and they still don't light up. Is this normal and I just didn't notice before?