Accept does not update Tracking info
 

I have sent out a meeting invite to approximately 50 people and noticed that
when they reply either accept or decline SOME of them does not update the
response status on the tracking screen of the meeting invite. The meeting
takes place over two days. Also noticed that even though people who have
been invited from the same network only some's response status are
updated... any ideas?

Running Win XP SP2, Office 2003 SP and all patches with Exchange 2003, etc,
etc.

Thanks
Pieter