1. If you use the current (5.0.7 and later) connector with Tiger, it will revert to using Sync Services and not allow the CalDAV option.
2. I used to get it predictable by making sure that both Zimbra has the contacts and calendars perfect, then use the connector to overwrite the Mac with the Zimbra server-side contents. If you also have Entourage in the mix, you will have conflicts pop-up--disable that if you can.
3. This has not been a problem for me with Tiger or Leopard in a long time-- see my solution for number 1 for settling that down.
4. In getting an event in Mail as an ics file you can open in iCal and accept it there, though I think the Zimbra Web Client is better for this kind of thing.
Chris @ DPM
Version 6.0.16_GA_2998.NETWORK Apr 4, 2012 MACOSXx86
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