CF - did you ever solve this problem?  I'm experiencing the same thing and
have searched everywhere trying to find an answer?  Does anyone else have
ideas on what the problem is here?

More details:   This occurs for only one user (A) in an office of 20 when
they are viewing one other user's (B) calendar.    They (A) can view all
others just fine.   On top of that, all other users can view the calendar (B)
that user (A) has trouble viewing.   All permissions are set up identically
as are all settings within Outlook that "should" relate to something like
this.  

When user A initially goes into user B's calendar, today's appointments
should up just fine.  However, when they try to navigate within the calendar
or change to another day, they get the error: "Could not read the calendar.  
You do not have sufficient permission to perform this operation on this
object.  See the folder contact or your system administrator."

Another unique condition with this problem is that user A can only see
private items within user B's calendar once the error has occured.  This is
the case regardless of the permission settings selected by user B for user A
regarding viewing private entries.

Active Directory settings are identical for all users.   The environment is
Windows 2000 Server, Exchange 2000 Server, Office 2003 on Dell Optiplex
Desktops.

Any and all help solving this issue is much appreciated.  Thanks!

steve