Hi,

it seems that Wikipedia's HTTP response contains this header:

Cache-Control: private, s-maxage=0, max-age=0, must-revalidate

If I understand this right, this means that the page must not be cached by the browser.

Has this header always been there? Or has it been added recently? If so, can it be removed again? :)

The reason I'm bringing this up is that I've noticed that Firefox has suddenly started reloading all pages whenever I use the "Back" function. It didn't use to do that until today. Hence, I suppose the header wasn't there before.

If the header isn't new and has always been there, does anyone have any idea what else might be causing Firefox's change in behaviour?

Thanks, Timwi