I tried a lot to get shared addressbooks and shared calendars working, but no way. I wonder if this is implemented?
The only way to get an event from a shared calendar to iCal is to get invited and accept the invitation. Thats logical because the event is then copied to the users own calendar.
Are there any news on this topic? I think sharing calendars and syncing to iCal are essential functions in a groupware solution that is also aiming at Mac users.