Geolocation wrong in IE9 but not other browsers

Hello,

I have noticed that apon using the Geolocation test on the test drive site, that my location according to Internet Explorer 9 is off. I don't just mean off, I mean WAY off. It has me down in Durham, England when in fact it should be in Scotland.

http://ie.microsoft.com/testdrive/HTML5/Geolocation/Default.html

Apon using it in Google Chrome it gets my location to the house. Quite litterly, but its way off in IE9. I know there is something called "default location" or something but I never set anything up involving that so I doubt that comes into play.

Whats going on ?

Thanks

- James