We eat as team in the cafeteria - it is the best way to keep in touch with the grapevine and also meet other people. If there is a personal issue or a serious work issue we eat at the desk and that is totaly fine. I have learnt certain things the hard way...learning to read the grapevine and informal ties is one of them.It would be nice if one could just work at one's desk and go home..but normally people like that are termed 'loners' , people don't approach you easily, nobody knows who you are...not good at all.