MinecraftForge/MinecraftForge — pull request #12 by cpw (2012-03-13 23:37:53+00:00)
Title: Fix worldgen doubleshifting in ModLoaderMP until SDK fixes it.

This means mods can generate surface and nether in SMP again. It's doubleshifting the chunk coords, so worlds end up with zeros everywhere. It's a bug in MLMP, but would be helpful to everyone generating world, including forge mods.