Well, looks like emails & rumours coming out of Apple were correct. The editable version of calendar (by altering plist on Jailbreaked Touch) does not sync correctly with iCal on Mac. Don't know about Outlook. Basically all entries on Touch go into "Home" calendar in iCal and this calendar is created if you don't have one. No way of choosing which calendar you want it to go in. If you change the calendar its in in iCal and move it or delete it then it does move or delete on the Touch. I suspect they ran out of time to get this right before they released the Touch as they needed to concentrate on getting os X 10.5 out by end of October. Easiest to just remove write ability until they had time to get it right after 10.5 has gone to GM.