Forgive me for being skeptical, but I wonder if you guys are pressing too hard on your screen? Mine only squeaks if I really push on it.
I've found I barely need to touch the screen to get it to respond. If you had the Wing or other WinMo phone, you're probably used to pressing much harder. You shouldn't have to with this phone, it's built to respond to the slightest touch.
Or at least that's my experience. If it's bothering you, by all means get a new phone. Perhaps it's a dual problem, perhaps the screen isn't as responsive, and thus you're forced to press harder and that makes it squeak. Best of luck, guys.