I believe the numerical value of a "billion" differs from the US/AU and the UK (and possibly the rest of Europe). That's what I've been told anyway. I'm not saying a billion dollars != billion pounds, that's obvious, but the actual number of 0's at the end is different.
Google will probably tell all. :tongue:
Edit: The above is true, Google is a fountain of knowledge

- See
this page.
Regards,