[Mailman-Users] Somebody could not subscribe to pypy-dev at python.org

[Laura Creighton]

In a message of Wed, 22 Apr 2015 09:07:13 -0700, Mark Sapiro writes:
>The message your user got, "You must GET the form before submitting
>it.", indicates the hidden 'sub_form_token' either was not present in
>the submitted form or was not of the correct format. This could indicate
>that there is a subscribe form for pypy-dev on some web site somewhere
>that does not generate a correct 'sub_form_token'. Basically, such 3rd
>party subscribe forms are intentionally disabled by this feature because
>otherwise they could be submitted by robots.

He says he got the form from https://mail.python.org/mailman/listinfo/pypy-dev

So what can corrupt the token, I wonder.  How chrome stores tokens
and what things -- like an add blocker -- could modify or remove
it isn't one of the things I know.  And how this fits in with 'ok
when no password used, not ok when a password used' seems quite puzzling
to me.

Off to think some more ...

Laura