importFromURL fails when importing PDFs from servers that do not properly support HEAD requests

[simon]

PDF downloads from Oxford Journals currently download the PDF to the desktop instead of attaching it to an item (at least on my Mac), because Oxford Journals returns an improper HTTP HEAD response:

{{{HEAD /cgi/reprint/19/6/635.pdf HTTP/1.0
Host: her.oxfordjournals.org

HTTP/1.1 200 OK
Date: Tue, 19 Dec 2006 23:55:17 GMT
Server: Apache/1.3.26 (Unix) DAV/1.0.3 ApacheJServ/1.1.2
Content-Length: 0
Last-Modified: Fri, 12 Nov 2004 22:22:50 GMT
Connection: close
Content-Type: text/html}}}

Is there anything we can do about this?