We are using Exchange Server 5.5 and Outlook 8.03, 98 and 2000 as our clients. When a user checks the free/busy times of a conference room in their “meeting request” it shows the room as free. But after sending the request they get an “unaccepted meeting” because the room HAS already been booked. It is manually confirmed that it HAS been booked by physically opening the rooms Calendar.
i.e Free/Busy times in Calendar are not updated.