Changing the default external browser for Emacs
A couple of months ago, my Emacs (version 22.2.1) started to open URLs using Konqueror web browser instead of Firefox. It seems the external browser configuration for Emacs has been mysteriously changed. Now I finally figured out how to change the default back to Firefox.
First, from the menu bar of Emacs, follow "Options", "Customize Emacs", and "Browse Customization Groups". Then, follow the following steps:
- Click "Option Browse Url Browser Function"

- Click "Value Menu"

- Click "Firefox"

- Click "Save for Future Sessions"

That's it. Actually, the above procedure saves a relevant setting in .emacs.el file as follows. So simply adding '(browse-url-browser-function (quote browse-url-firefox)) into the custom-set-variables clause should also work!
