i just bought a c1000 and i refuse to believe that i can not sync with my mac. instead of really syncing i have set up apache webservers on the mac and on the zaurus and used a shell script to get the calendar off the mac (via ssh and expect), another script then posts the updated calendar localy on the webserver (ko/pi calls these automatically). i then subscribe to the zaurus calendar. if you only show the zaurus calencar in ical, you will have an updated calendar with no duplicates. i can post more detailed instructions if anyone is interested.