Okay.. So i have 4.5.0.81 and im more than positive that when i first downloaded it and went to options-about, to make sure it had the right OS, it was there. (This was the first day it came out, about a week ago mind you.) So out of now where today, i went to just go look under about, just bored, going through my phone. And it wasnt there. IT says about but nothing comes up when i press about. I did a battery pull more that once. Has this happened to anyone. I really hope i dont have to reinstall the OS again..