From
http://faq.ua2go.com/display/4/kb/br...=1&r=0.7568585
as of 5/1/07:
What happened to the download to calendar feature in My itineraries?
The download to calendar feature has been temporarily removed from united.com. We are working to restore it, and we apologize for any inconvenience this has caused. In the meantime, when you book a new itinerary, the feature will be available to you from the confirmation page of united.com when you book a new ticket.
I hope UA means "temporarily" means when it says "temporarily."