I’ve gone ahead and updated the server to MC 1.0.1 and the dev build of Craftbukkit to match. I’ve removed the Beta 1.8 world and have gone back to just the old Beta 1.5/1.7 world. Note this means the biomes are COMPLETE different and it seems that all of the major build areas are now tundra & snow. Oh well.
I’ll eventually generate a 1.0 world, but that will probably be once a recommended build of Craftbukkit is out for 1.0.