For me, the problem was an auto added utf-8 header in my webserver’s config file (lighttpd).
Thanks. In the meantime I succeeded with integrating my login system with WP, including autologin.
After some trying, I succeeded creating my auto-login plugin… 🙂
Can this plugin support auto-login, so the users don’t have to click on “login” at all? I don’t see how this can be implemented in WP. If you could do this, that would help a lot. Of coutrse this may be inapropriate for LDAP, since you don’t know if someone is logged in to LDAP in a web browser. Still if you can suggest anything… Thanks.