Preferred language in Firefox 3!
In the case of websites that can be displayed in multiple languages, the browser will display the website in the language of the browser. With browsers like Firefox and Camino, it is in the language that you downloaded it. With Safari, it is based on the primary language of the OS. It has now slightly changed with Firefox 3. You can choose a list of languages in order of preferences and it is unaffected by the language of the browser.