The other day, when I plugged my iPhone in, I got the message of a new update, which I ran. While running it, the phone locked up completely. Got a message from iTunes in another window. My only option was a full restore. I ran the restore and all seems fine, but I now get the following every time I sync: Syncing with "iPhone" will change more than 25% of the Calendars on this computer." It shows a few figures as if what will be changed, or not, but that may not be what it indicates. I have the choice of allowing, or 'do not sync'. I select do not sync, though my calendar did reload and seems to be complete. What's going on with that?