Outlook calender attendee response problem

Hi

I’ve got a problem here with one of my users when trying to setup meetings she sends out the meeting requests, the attendees reply and under Tracking it updates, but when the meeting is Updated and the responses come in it does not update anymore.

We are running Exchange 2003 with the latest updates and client is running Outlook 2003 with all updates installed.

Any input would be appreciated.

Thanks