This article is perfectly timed! We have macs still running Leopard (10.5.9), due to several important programs that will NOT work with either Lion or Mt. Lion. So, because we can't upgrade from Leopard, Apple refuses to let us use iCloud. In comes Google Sync! I tried to set it up to sync the Calendars (iCal) and Contacts (Address Book) in OSX Leopard. The Google Sync end works, but Apple's Leopard Address Book absolutely will NOT sync to Google Sync or Apps. The iPhones sync fine to Google Sync, as far as the Calendars, and Contacts sync from Google to the iPhones, but the Apple computer's Leopard will NOT sync the Contacts (address book) at all to Google, (and iPhones). This Google Sync Apps solution looked like a great way for us to sync our iPhones and Mac computers Calendars and Contacts but, the hangup is the Apple OSX Leopard 10.5.9. It simply will NOT sync the Contacts with Google Sync Apps........Like I said, we have far too much money invested in other programs to upgrade to Apple's Lion or Mt. Lion. We have to stay at Leopard unless Apple fixes Lion and Mt. Lion to work with 3rd party software. Any other ideas for a syncing solution?