www-archive@w3.org from December 2002: Serving XHTML as applica
XHTML is a great way forward to avoid the infamous tag soup that many web sites have deployed over the time. But for this, and as described by http://www.w3.org/TR/xhtml-media-types/#application-xhtml-xml it ought to be served as application/xhtml xml. But some browsers do not recognize this mime-type, and for instance, IE proposes to download a page served with this mime-type instead of displaying it. Here is a solution to workaround this.