Still an issue in 1.8-pre3
Appears to still be an issue in 1.8-pre3... On my own server, difficulty 3, pigmen would aggro unprovoked. Tried setting difficulty 0 then wandered about to despawn all of them, went back to difficulty 3 and the first few pigmen to spawn immediately aggro'd.
Experienced this today. I have two command blocks that refuse to recognize commands (that work in command blocks at other coordinates). Really messes with my nice clean lines of command blocks, to have certain blocks that don't work.
Using 1.8.1-pre5, superflat creative world, redstone preset.