@Ridiculous ... re: Sync Errors bug ... yes, its been more than a year that I've been waiting, but others have been waiting a lot longer than that ... I can wait a few more days for information quite happily, provided that the information is correct and trustworthy. I still don't know whether the bug is in Exchange 2010, or in Outlook 2010, or even both apps.
Most of the frustration is because its not a critical error. Outlook complains because it tries to delete something which is in Outlook but which isn't in the Exchange Server. If it was in the Exchange Server, Outlook would delete it (without an Error) and then it wouldn't be in the Exchange Server. The end result would be the same: the email would NOT be in the Exchange Server. So if the end result is the same, why throw an error in the first place. It does my head in!