I am trying to login to Superuser with OpenID, and it generates a request like this:
telnet phor.net 80 GET /professional HTTP/1.0 Accept:text/html,application/xhtml+xml,application/xrds+xml`
And my Apache server gives the error:
406 Not Acceptable: An appropriate representation of the requested resource /professional could not be found on this server. Available variants: professional.php, type application/x-httpd-php
If a normal web browser hits the site, content negotiation correctly selects professional.php as the resource for this request. Is it possible to serve this same file to superuser?