iSync, ical and p800

iSync kept bumming out on me when trying to sync my calendar on my P800 with ical. It seemed to get all the items from the phone, merge them ok but then fail with a comment like ‘could not connect to p800 please check the pairing with this computer’.
This Apple document sorted out the problem for me – I didn’t even get to the stage of rebooting the computer. It seems to be curable by removing and re-adding the phone from devices to sync. Next: turn all my calendars to RDF and put them up somewhere.
Oh, powerbook users may need the bluetooth firmware upgrade.