Firefox downloads some HTML pages to files rather than diplaying them
On some web pages (not even all pages for the same site), trying to view the page (either by typing in the URL or clicking through a link to it) causes Firefox to download the page to a HTML file on my desktop rather than display it directly. The downloaded file appears to be correct HTML (I can open it as a file in Firefox and read it). The file is apparently downloaded as "Web page, HTML only" rather than a "Web page, complete" since included graphics do not display.
For example, http://www.bottlebiology.org/basics/index.html displays this problem but http://www.bottlebiology.org/intro/index.html does not.
Opaite Mbohovái (2)
This will be due to a misconfigured server, see http://kb.mozillazine.org/Page_downloads_instead_of_displays
web-sniffer.net shows:
Content-Type: application/x-httpd-php