Arf, ça craint dragule...
***
Au fait pour les mobs, je t'avais dit des conneries hier en fait:
http://www.minecraftwiki.net/wiki/Spawn
Mobs
"Mobs spawn no closer than 24 blocks, but no further than a 144 x 144 area around the player's location after a short delay. A player running through the game world will usually keep ahead of the waves of mobs spawning. Mobs are removed if they become more than four chunks away from the player."
De là les gigantesques mob-grinder, j'en construisais un en solo ce matin (du moins une section pour essayer) quand le pc a lâché! 