I have a complaint from a user who, when creating a new meeting request and
inviting, say, user1, user2, and user3, has seen the final meeting request
display one instance of user1 and user2 (as expected), but TWO instances of
user3.

He has seen this behaviour more than once, and I haven't been able to find
anything on it. The client is Outlook2003 on XPsp2.

Any ideas would be greatly appreciated.