User: "Everyone seems to have US English as the default in the spell-checker in Word and Outlook, we think the default should be UK English."
Me: "Oh. Ah. Hmmm."
Me: *click* *click* *click* *click* *click* *click* *click*
Some users: *wait for an hour or two*
Impatient users: *log out and in again*
Me: "Try it now."
Users: "Oooooooh. Yaaaay!"
Me: "Here, have an invoice."
Users: "..."