This might be related to this issue --->
http://www.bay12forums.com/smf/index.php?topic=158978.0I noticed that all my dwarfs have the "lack of decent food" thought despite my fortress cooks only preparing masterwork meals with a wide variety of meat,plants,eggs and fish
I also noticed that none of my dwarfs are using the assigned meeting hall.
They are only standing around in the inn to socialise but they all ignore the prepared food there and instead walk 3 z levels down to eat my unprocessed stuff.
Sometimes a single dwarf will actually walk to my food stores grab something and then eat t in my meeting hall but i have the feeling that this only hapens on very rare occasions
I have set the area as a meeting zone and put a yes into the option on the table, note that they also wont eat in the dining rooms if i set the meeting hall option to no, instead they will reat at randomly free tables in the fortress