(new bug #886) The submitter got a 300 Multiple Choices without a Location header. from the RFC, If the server has a preferred choice of representation, it SHOULD include the specific URI for that representation in the Location field; user agents MAY use the Location field value for automatic redirection. and Unless it was a HEAD request, the response SHOULD include an entity containing a list of resource characteristics and location(s) from which the user or user agent can choose the one most appropriate. In this case, http://www.weather.gov/data/current_obs/PAFC.xml had no Location, and does have a body consisting of an HTML page giving alternatives. PS I think it might become more common for users to encounter Multiple Choices now that there's a pref for Accept-Language.