The events originally synched, or created in Outlook can not be edited on the iPhone. Can't edit, delete, change time, etc. All you can do is change reminder time. If you create an event on the iPhone it behaves normally (edit, delete, change time, etc.) until it is synched and you edit it in Outlook. Then once it synchs, it is locked on the iPhone. Also, events from Outlook all generate invitations on the iPhone. As if calendar appointments are being treated as meeting requests once they get to the iPhone. I need to delete hundreds of invitations. Anyone else experience this? Am I missing a setting or permission somewhere? SBS 2003, Exchange 2003 SP2.... iPhone 1.0 upgraded to 2.0 today.