For the benefit of anyone reading this later, in an archive presumably, the
problem turned out to be (most likely) caused by a long standing Firefox bug
- see the following cases for further details:
https://bugzilla.mozilla.org/show_bug.cgi?id=707156
https://bugzilla.mozilla.org/show_bug.cgi?
I run a website for a local club. The site is divided into three sections,
public, members only, and administration with the files for each section in
a separate folder on the server. The members and admin folders have their
own (different!) passwords, set up in .htaccess files - I'm not a U**x
hea