I have an iPhone 3GS, and its calendar won't sync with MobileMe even though Contacts, bookmarks, and mail all sync perfectly. There are three other computers on this MobileMe account, and one other iPhone. They all sync perfectly with calendars. Its just a problem with my particular iPhone and its calendar. I have tried all the basic troubleshooting. I turned off the calendar, and turned it back on. Tried pushing an event out to trigger syncing. Tried manually syncing through iTunes and seeing if that helped. Nothing is working. This has been a problem for at least a week. I don't know exactly what happened to make it stop working. However, solutions involving changing settings on one Mac will have no effect (such as reset sync) will not be effective because syncing is fine on all my other Macs, and on my other iPhone. Any thoughts?