Zombie pigmen randomly attack not only myself, but other members in my minecraft world. Not all of them attack at the same time either, only one or two at a time. So this clearly is NOT caused by them being agro'd!!! This happened in the last update (which I thought you guys would fix by now) and seems to be even worse after the update today! I have been chased almost every time I walk through the nether. Even after a 5 min cool-down and reloading the world! FIX THIS PLEASE!

I figured I would add this: you cannot place the top half of a slab on the underside of a block. It places a whole block, instead of a half slab. This did not happen until the update today!