Licensing change from Office 2010 -- retail copies are now locked to the machine they are first activated on and cannot be moved to a new machine. http://arstechnica.com/information-...e-2013-license-may-send-users-to-google-docs/ Really stupid change -- wonder if M$ will backpedal on this or not. If not, at least I know I won't be buying any future Office licenses. And, if they get away with it on Office, I wonder how much longer it will be until the same thing happens with Windows. . . .