It looks like Punjab in Arlington Center is moving a few doors down, into a larger area. They are taking over the old Buck A Book, which has been closed for a long time now.
Punjab is a big success story; the place is packed every night, and they are considered to be one of the best Indian restaurants in the Boston area. I have not been there yet, but hope to get there either before or after the move, which should be fairly soon.
-MH