Room does not show as available

We have a limit of 365 days into the future that you can reserve a room in the Room Resource database. I have several rooms, all under the same site, and this limit works on all of them except one. We have one room (Ponderosa) that is set up the same as all the others but I can only reserve that room until January 30, 2010. If I try to reserve it for January 31, 2010 (or any later date) - it won’t show up on the list of available rooms. Is there somewhere else I can look to find out why this room is acting differently? Thanks. Bob