This happened to me in the top floor of a barn, however I was not running or moving at the time it occurred. I was stationary for 20-30 seconds, and prone.

I was hiding because I had heard player activity in the area however there were no gunshots, nor were there any players inside the barn when I died (I was looking down on the entrance). I do not believe I was killed by a player.

I had been having desynch issues for a few minutes prior to the death, but I do not think that you have to be running in order for this to occur, or at least this has not been the case in my experience.

Edit to my report: Confirmed, was not a player related death. I guess the 'player activity" was merely my adjusting the volume and triggering the moan/gunshot/broken bone noise.

Very nearly crapped my pants just now in the middle of nowhere at night with the gamma turned down...