No content negotiation in releases/stable

[Javier Fdz-Sanguino Pen~a <jfs@ieeesb.etsit.upm.es>]

	While accessing http://www.debian.org/releases/stable/i386/install I
received the english version of the manual, instead of the spanish one which
is also available (in install.es.html).
	It seems that content negotiation is not working in this directory
¿any idea?

	Regards

	Javi