I often get iCal invitations from people in Sydney, Australia which cause problems for me in Auckland, New Zealand two time zones to the East.
The invites tend to be written in the invitee's time zone, but don't get translated so they are two hours out.
That's not always a difficult problem to deal with, I can often manually adjust the times. However, in the last week or so - possibly since the Mavericks upgrade - it's no longer possible to click on the times of these appointments and adjust them to local time.
I suspect this problem is not unique to New Zealand. :-)