My character is moved when i relogged. So I currently have no problem playing. I posted this as a bug report. But thanks for your interest and fast reply.

Just paid more attention to this thing. Gunshot sound direction seems to be okay. But zombie sounds are really bad. And in addition to what i said before, sometimes a zombie plays a second (or third, maybe even forth) sound clip (with a really different voice) before the previous sound clip ends so makes you think there are more then one zombies charging you. One time, after i fired a shot 3 zombies charged me and they've sounded like there is a horde after me.

I think as a survival simulator sounds are really important in DayZ and shouldn't confuse players.

No. I turn until zombie is completely at my right side, and I don't use alt. Sound clips started after i turn completely comes from the correct direction, but sound clips started before i turn around keeps coming from the same headphone, as if zombie is orbiting me as i turn or as if there are zombies everywhere.

as of 0.57
Happened to me quite a few times (4 or 5 maybe)
don't even take a step. (i flipped off to the air a few times while trying to alt+f4, that didn't change anything. important thing is not to do something the server saves, like moving, picking up an object, arrange your inventory)
quickly close the game.
join to another server.
your character is back.
%100 worked for me.