Sorry guest, this is a bug, whatever which way you look at it. Zombies can see you from too far away - fact. If I have to look down my scope to "see" a zombie, but yet this one has already seen me (with his, I'm guessing, deteriorated eye sight from being dead and all) and started running at me - there's a bug there.

Gotta love it when a 'guest' takes it upon themselves to moderate a forum. Good job.

Yeh, it does seem to be a bit "random" in the way it works. I was standing right next to one a minute ago, and it didnt bat an eyelid. But yet ones miles away will run at you double time.

Yep, same thing for me. Kinda makes killing people utterly pointless right now - it has no benefit to the attacker.