I watched a Microsoft webcast today (2/20/07) where they mentioned that the previously suggested patching order has been changed especially if you have heavy users of OWA. Sounds like they are also re-working the TZMOVE tool and the server side wrapper to make it work better especially with resource calendars. I still can't imagine why a multi-billion dollar company like Microsoft put together a cheap little wrapper that uses paths to "TZMOVE", "Outlook" and batch file commands. You would think that they would understand how critical Exchange calendaring is and provide a professional server side tool to use. I continue to test with TZMOVE on the client side and it only correctly adjusts about 50% of recurring appts. I may just skip TZMOVE and have users correct their own entries.