I got the same problem after upgrading to s9y-1.4.1.
My blog is hosted via http, let's say
http://mydomain.com/blog
and I want to use the admin-interface via a SSL-proxy of my provider using a different Url, f.e.
https://ssl.myprovider.com/blog.
With s9y-1.1 it was no problem to use the admin-site via this SSL-proxy, but using s9y-1.4.1 it's not useable anymore... ;/
I enabled "Detect HTTP-Hostname automatically" too.
I can login, but when I click a link at the sidebar, f.e. to create a new blog entry, I get redirected to the login-page again (on the SSL-Proxy).
I use the same path "/blog" directly via mydomain.de and via ssl.myprovider.de:
http://mydomain.com/blog
https://ssl.myprovider.com/blog
I don't know what exactly the problem is... looking at "Live-http-headers" I see that the admin-site is sending "
http://mydomain.com/..." as referer ... might that be the problem ?
Is it possible to use the admin-site like this... via a different SSL-Proxy-Url but with the same path ?
Can anyone help me to solve this issue ?