I am having an issue in 4.5.7 NE where attendees disappear from meetings on a shared calendar when viewed through Outlook. This behavior is not observed through the web client. I have a public read-only 'company calendar' that auto accepts all. Employees will invite it when they want certain meetings viewed by all staff.
When you first add the calendar share in Outlook the schedule populates and all is well. Throughout the day attendees start to disappear until only the organizer shows for each meeting. Close the shared calendar connection, reopen, and they all return (for awhile).
Also, the dropped meeting information is not the same for each and every Outlook user.
ZCS 4.5.7 NE on RHE 5.0
WINXP SP2, Outlook 2003 SP3, ZCO 4.5.373