I just went through a factory data reset and had this happen. I went into gesture settings and unchecked all the ones I used, then exited out and cleared it from running apps, restarted phone. Once booted back up and everything loaded, I went back into gestures and turn on the ones I used...
Think all the people talking Smack about how long it takes VZW to release an update stepped on their toes.
I'm enjoying my 4.4.3 update right now from VZW!
I had the same thing happen, even put a tiny scratch, from a safety pin...
I used a can of air at a little bit of distance and out it came.
I think it was dust.
I bought the duel charger from VZW, has one fixed micro USB cord and a USB port. It is a 3.4A charger, it charges much faster then the 1.5A I was using with my M8. My guess the reason for this is it is using the 2.0A chip.
I bought mine at VZW after trying one from Amazon that snapped together, didn't like it. This one is by far the best I have came across.
Clear Shell with TPU Edge for the all new HTC One (M8) - Verizon Wireless