I can't believe I never saw this thread, but me too, my End button got stuck.
Took it to a Verizon store, girl was very nice, never gave me any indication of this being a known issue, etc., gave me the telephone number for warranty replacement, got it two days later (today), and yes, it's "refurbished". Looks pretty good, but if you look closely at the face I can definitely tell it's not a new unit. Oh well.
Lesson learned here is be damned gentle on those hardware buttons!