Windows 7 64bit
Villagers despawn just as mobs do when you get far enough from them.
Cured zombie villagers despawn and will not breed
Persistant mobs disappearing
Testificate Villagers Despawning on Survival
NPC does not reproduce after being turn back to human.
Villagers acting eccentric and dissapearing
Villagers de+spawning randomly even when player is in same chunk