I imagine you mean emptying a mag on a floor? That has already been reported dozens of times.

With that last update, character's name was changed from Steam name to computer's name. All you have to do is launch DayZ and in main menu click on your character's name. It will become active and you can change it to whatever you like.
Seriously guys, read the forum from time to time, it has been explained dozens of times.

Same here, logins and logouts are freakin' scary!

I confirm, happened to me once when I was just walking up the stairs and when I reached the top, I died. Not sure if it was exhaustion + high blood pressure or what, but it should be fixed