Sometimes when a meeting is scheduled with a group of people and you view the
attendees calendar some meetings are visible to some people but not others
even though the meeting is on the clendar.  example:  a meeting is scheduled
by Ann at 10:00-11:00 with Ann, Jo and Tom as attendees.  The meeting appears
on all of their calendars when they view their own calendar.  When Tom opens
Jo's calendar, Tom does not see the meeting on Jo's calendar, the 10-11 time
is free.   We are using a mixture of 2000 and 2003.  
Does anyone know why this would happen?