This sounds like permissions for the parent container for your users in
Active Directory are set too loose. The Exchange administrator should
investigate.

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Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
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> We upgraded our network to Office 2003 this summer and now
> all of our Outlook calendars are viewable by everyone on
[quoted text clipped - 5 lines]
> confidentiality problem with all staff having the ability
> to look at an administrators calendar.