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After a login on another computer I saw weird behavior while logging in. My OpenID endpoint asked me if I would like to autologin. I quickly noticed an s in the url https. So I tried to surf Stack Overflow via https and it works!
Just one thing does not work: some icons like the tag icons and here on Meta the link to my user avatar. All those images point to
http://i.stack.imgur.com/.... Please fix these urls by using
//i.stack.imgur.com/... instead of