I posted about a similar issue some months back (edit:
found it!), but dropped the game around then to pursue some other games, but now I'm playing DF again and I want to point out an odd theft occuring with carpenters.
When a carpenter is supposed to be working on something, sometimes a dwarf set to wood hauling comes by and takes the wood. This seems to happen when the carpenter stops working on a piece of wood to get something to eat/drink or take a break. The wood hauler simply takes it and puts it in wherever my first designated wood pile is (usually outside).
I don't know how the carpenter reacts, but I think he either grabs another piece (since I keep a small pile of them next to the workshop) or continues as if the wood were still there and make a product successfully. I'll keep an eye out next time if it happens, but it's tough doing that when I just want my fortress up and running.
I think this only happens because I have two wood stockpiles, one as my primary mass-dump site so the lumberjack/free dwarf doesn't have to haul wood very far, and another right next to my carpenter's workshop. The one next to the workshop is always designated as taking from the big pile outside.
I haven't really cared much for this bug as it doesn't happen often and wood is easily gotten straight from his pile. Since it doesn't happen much and I'm impatient to get a fort going, I have trouble reliably viewing this happening.
[ March 12, 2007: Message edited by: Freakazoid ]