I ask because when we last did this (in the days of Panther), I was forced to change my user account name because of a clash, and I would really like to take this opportunity to change it back again. So do I need to engineer a clash of names again in order to be offered the chance to change the name?
Note that I am talking about the apparently unchangeable name that appears alongside the house icon in the finder - not the one on the login screen which is changeable at any time.
P.S. I have had plenty of time to think about this changeover - when Applestore UK says that new iMacs are normally shipped within 3-5 business days, I do think they might mention that they are shipped from China! Actual delivery time is two weeks and counting. . .