I have just read Mac OS X 10.5.3: sync Google Contacts on the Official Google Mac Blog, which is a feature I have been after for awhile! After upgrading to 10.5.3 and restarting a few times I opened up the Address Book and dived into the preferences, only to find that I only have synchronize options for .Mac, Exchange and Yahoo!. Whats the catch here? My Address Book version is 4.1.1 (695) and the About This Mac dialogue reports 10.5.3, so where's my sync with Google Contacts option??