The following world config refuses to generate any border biomes that I set. I have the border set in both the world config and the biome config, and nothing happens:

http://pastebin.com/fExDVs8h

EDIT: I'm using the 2.5.2 version of the bukkit plugin.

Maybe the biome size is wrong? (Remember: higher BiomeSize --> smaller biome. When a border is larger than the bioome itself, it won't fit.)

Anyways, you can better make a post at the forums. For me border biomes work fine, so you need to provide more information if you are sure there is a bug.