Recently made the move towards using Linux as my main desktop environment. Tried Fedora 11 but found it too unstable, open gl screensavers had a tendency to crash the system and whereas I had grown accustomed to such standards from M$ Windows I wasn't really going to tolerate, switched to Ubuntu 9.04 64-bit and so far everything has been fine.
Anyway before this turns into a post about Linux pros and conns one of the things that was bugging me that when I went to some websites they picked up my language as English (US/American), a little thing but annoying.
Installed UK dictionary from add-ons but that didn't work, solution is in the http.accept_language param sent by the browser.
To change just enter about:config into your address bar in firefox.
Enter "Lang" into the filter and change "intl.accept_languages" to read "en-gb, en"
Websites the pick up this language param will now know that UK english is your default language.