MiNdWaRp

I would normally consider this, but I stood near my buddy's corpse for a few minutes and didn't encounter anybody or get shot at. If you go to 16:40 on this video http://www.twitch.tv/mindwarp/b/323263701 you can hear him saying he died then see me wander around his corpse and loot it for a few minutes. Had somebody killed him, wouldn't they have come for his corpse and/or killed me as well?

I just had it happen to me twice. The first time, I saw a guy spawn in front of me. I killed him, ran into the store next to me and sat by the doorway killing zombies as they came in. Suddenly, I dropped dead. No shots fired, not even moving, just dead. The second time was shortly after that, running through the airfield in Balota. I walked over a door, got knocked unconscious and just died. Has anyone else spontaneously died while not moving? The second one, i can understand, due to terrain issues. The first one, however, made absolutely no sense. I didn't even get an hourglass. I just fell over and got the You Are Dead screen.