I upgraded to Leopard a week ago and everything is going fine, except for one problem. Whenever Entourage, or iCal, or mail, checks for updates (or .mac tries to sync) I get the error that Addressbook Sync quit unexpectedly. I have spoken to Apple and they had me reset my .mac sync preferences but this has not worked. Is anyone else experiencing this problem, or does anyone know how to fix it? Thanks a lot!