Try posting this to an Exchange group - they may have a suggestion.

--�
Milly Staples [MVP - Outlook]

Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.

After furious head scratching, todd5574 asked:

| Hi,
| I recently upgraded my Exchange organization from several servers
| running Exchange 2000 to an Exchange 2003 SP2 Cluster with an
| Exchange 2003 front-end server which handles OWA, pop, and IMAP.
| Most of my Outlook clients are Outlook XP (2002). I am in the
| process of upgrading everyone to Outlook 2007. Currently I have
| about 50 out of 300 users on Outlook 2007. The exchange servers are
| located in California, but we have offices throughout the U.S., Asia,
| Japan, Europe, etc.
|
| The issue I am having is with meeting requests and outlook calendars
| in general. The problem is very inconsistent and happens mainly to
| people who are delegates of others calendars. Here is a list of
| things that happen:
|
| 1. free/busy status is sometimes greyed out for some people. this
| makes it difficult to book meetings when you can't see others
| availability. --- I tried 'outlook /cleanfreebusy' and verified the
| schedule/free busy public folders have all been replicated.
|
| 2. meetings that get updated stay on the calendar, but also show up
| on the calendar at the newly updated time. this causes confusion
| since the same meeting shows up twice at different times
|
| 3. Time Zone issues. When a meeting is booked in California at 1pm
| and someone from New York is an invitee it doesn't always show up at
| the proper time on the New York persons calendar. Sometimes it will
| be an hour off, sometimes 4 or 5 hours off.
| ----I verified with the people having the issue that their time zone
| was set correctly on their workstations.
|
| 4. Making changes to an existing meeting. When a delegate removes
| someone from an existing meeting and the meeting update is sent out,
| the entire meeting often gets canceled.
|
| 5. When adding someone to an existing meeting, then sending out the
| update and choosing to 'only send to added or deleted attendees' the
| update is sent out to everyone in the meeting.
|
| Please note that this does not happen all the time and it mostly
| happens when the admins are updating others calendars. This also
| happens on previous meetings that were booked when we had Exchange
| 2000. Unfortunately in my case this is happening to the CEO, CFO,
| COO, and their assistants.
|
| I have sent out at least 50 meeting requests, updates, changes in the
| past couple of days and I cannot duplicate what the admins are
| seeing. However, it continues to happen to them.
|
| Of course they all want a quick fix, but I am out of ideas. Any
| suggestions would be greatly appreciated.