This is related to GnuPG site, but I found no better place to report it.

To reproduce it:

1. Open gnupg.org

2. In the menu above, click in the item "Documentation > HOWTOs"

3. In the "GnuPG MiniHOWTO" section (the first), in the first option ("as on-line browsable HTML files"), click in the "en" link. This link points to:

http://www.dewinter.com/gnupg_howto/english/GPGMiniHowto.html

4. Using Firefox, after a few seconds, an error page with the following message appeared:

Wrong redirect

Firefox detected the server is redirecting the request to this address in a way that will never end.

This problem can be caused by disabling ou refusing to accept cookies.

And I say: cookies were not disabled. So there is something wrong with whoever is hosting this GPG page.