A couple of issues I'm having, not sure if it's bugs or I'm just missing something.
1) I can't find any lava under the base, there's just a vast sea of gravel over obsidian. I'm going to try digging through once I manage to make a tool that can mine obsidian, just to check if there's anything underneath. I'm using the 1.2.5 map if that matters.
2) Flaxbeard vacuums don't seem to suck up apples, which is frustrating my attempts at automated water creation. They seem to work fine picking up anything else, but apples just rubber band.
3) Slimy trees disintegrate as soon as I break a leaf, even if the trunk is still there.
Oh, and not really an issue but:
4) Is there a better way to get iron that I'm missing, or do I really have to spend hours mining those pillars? The steves cart stuff takes an absurd amount of iron, and I don't know if I can be bothered mining it all by hand.