Question : Outlook 2003 Exchange 2003 - Calendar shows items in only one view not in others

We are running Outlook 2003 with Exchange 2003 server.  I have one user whose calendar shows items in the Day/Week/Month view, but if you change it to events, appointments, etc. there is nothing there.  It also does not show up on his Outlook today screen.  If he tries to add an appointment it gives him the following error:  The item could not be saved to this folder.  The folder has been deleted or moved or you do not have permission.  Do you want to save a copy in the default folder?  If he answers yes to this - it then gives him the message: The operation failed.  Can someone help me get this resolved without losing all the appointments in his calendar?  Thanks.

Answer : Outlook 2003 Exchange 2003 - Calendar shows items in only one view not in others

look for related events on the exchange server. It could also be corrupted mailbox.
Export mailbox, Create a new mailbox and import all the items back in if necessary.