Got my Mac in August w/t Snow Leopard. Never activated the MobileMe account. This week on the top bar next to the airport icon a MobileMe sync icon appeared. "Never Sync" is grayed out, but "Sync Now" and "Sync Preferences" are hot links. Sync Now tries to sync to MobileMe and Sync Preferences takes me to the sign up screen. How do I get rid of this and make sure that MobileMe is off?