Someone seems to have found the issue. Apparently the algorithm for expanding the villages is not very effective and is causing villages to shrink instead of expand. The analisys of the code seems very thorough, I will not copy it here because it is too long, but you can find it here: http://www.minecraftforge.net/forum/index.php/topic,7351.0.html
Ezequiel Blanco
Someone seems to have found the issue. Apparently the algorithm for expanding the villages is not very effective and is causing villages to shrink instead of expand.
The analisys of the code seems very thorough, I will not copy it here because it is too long, but you can find it here:
http://www.minecraftforge.net/forum/index.php/topic,7351.0.html