I downloaded your Firefox 6 and when installed it was all in Dutch. I couldn't find how to change the language to English, so I trashed it and downloaded 5 again and now it is back in English. How do I change languages.

Open Firefox -> go to Tools Menu -> Options -> Content -> in Languages section click "Choose..." button -> select English (whatever version) -> Click OK on Languages window -> Click OK on Options main window

In Firefox 5, my Tools menu does not have Options or Content, and in Firefox 6 it is all in Dutch and I don't think I saw anything that looked right. I could look again in the Firefox 6 menu item one to the right of bookmarken.

Activate the Menubar by Pressing F10 or Hold ALT key -> go to Tools Menu -> Options -> Content -> in Languages section click "Choose..." button -> select English (whatever version) -> Click OK on Languages window -> Click OK on Options main window.

None of your suggestions work here. You must be on a PC with a different UI. I'm on a Mac.

OK. Running Firefox 6 now in English. Downloaded afresh from different part of Mozilla site. All's well.

Still don't know how to change language, but English is what I want anyway.

sorry didn't saw that you were Mac user.

For any others, the good place to find both Firefox 6 and Firefox 7 (Aurora) in English is this page:

http://www.mozilla.com/en-US/firefox/channel/