UK computer users will be well aware of the irritation of working on a computer which has a United Kingdom layout keyboard, but is configured for United States layout in the operating system.
Specifically, the locations of " and @ are reversed. This means if you try to type @, you will get ", and vice-versa. This simple configuration error is extremely common on pre-installed systems sold in the UK, since manufacturers rarely bother to change the locale to United Kingdom.
With that in mind, may I offer this sage piece of advice for manufacturers in order to avoid irritating the hell out of their UK customers:
DON’T SHIP SYSTEMS WITH DEFAULT PASSWORDS THAT CONTAIN A GODDAMN @ SIGN.