lucy24 - 10:05 am on Sep 21, 2012 (gmt 0)
Oops! Firefox could not find .example.com
Oops indeed. Did you really type the url with a leading period, or did it just sneak into the post? Quick detour confirms that a leading . makes the difference between a variant name (example.com) and complete failure (.example.com doesn't exist).
Except that if I just type . and nothing more, the browser will helpfully supply the whole URL of this current thread.