Having a problem of the address book, Calendars and Task are different from two machines, I searched around and finally found a program called fruux . It is free ! And it seems solve my problem. I want to have my Address Book, Calendars, Task and Notes are in sync, then my iPhone and iPad with have a synced version of this kind of thing.
I will try it tonight to update here the feed back .
I think you have the same issue, right ? Then, try it !