mapkycarMdes: strange. Seems to be working for me. What happens when you try from another browser? If it's consistent, could you maybe record a network log so we can see what's going on?
rMdesthe steps are : 1) login, I see the dashboard and I can go to any part of the admin site. 2) I pick a post type (status) type it, hit the publish button, I land on a Known page where I can try again, but it log me out, on the screen I can see "invalid token" - 3) I have to login again
mapkycaYeah, sounds like a TLS/non-TLS cookie problem. Login will be directed to HTTPS, and then it sounds like you're being forwarded to non-tls afterwards and so the cookie is no longer available when you post your status update
mapkyca"invalid token" isn't necessarily anything to do with being logged out (if you can refresh the page and see the logged in menu, you haven't been logged out) that's the XSS validation failing on post
mapkycathe token is generated over site secrete + action + time + _session id_ ... so maybe if the form is generated on https but posted to http, then it's not beyond the realms of possibility that the session id has changed, although I've no real data here. network log might help with this (chrome dev console allows you to record, ff might as well)