Only Baby zombies spawn.

Redownloading Minecraft (and server) fixes this.

I got into my 1.6.1 world in the 1.6.2 prerelease and was attacked by 3 baby zombies (not villager baby zombies)

Knowing these shouldn't spawn like this I switched to creative mode and gave myself a Spawn Zombie.

I spawned over 9 baby zombies from the spawn egg and 1 villager baby zombie.

This breaks the game's normal gameplay and should not push 1.6.2.

Ways to reproduce:
1 way:

• Zombie spawn egg
  • Spawn
    • Only baby zombies spawn

2nd way

• play survival and notice baby zombies

also zombie pigmen babys spawn