Donald,

Windows XP with Firefox 48.0.2 in which most secure
Web sites will still work.

Any reason for that, and not an earlier/later version ?

FYI, I have v52 installed (on XP), and *really* don't like it that it tries
to phone home every time I start it - nor the ammount of (sometimes
guess)work involved to disable other phone home stuff. So, I would not
mind using an earlier version which does not have as many "you must want to
have this" (which I don't) features.

The biggest problem however is that there seems to be *absolutily zero* in
regard to a feature/comparision sheet, meaning that, most important, I
cannot even check which encryption levels are supported by which version
(and thus have no idea how far back I can go, version wise, without loosing
connectivity).

Regards,
Rudy Wieser