i just installed piwiki, without any problems, but when i try to login into my superuser-account, it always gives me:
Fehler: Form security key is invalid or has expired. Please reload the form and check that your cookies are enabled.
cookies are enabled and the form is as fresh as it can be.
the password is the right one, too. (md5sum matched with stored one in config)
i’m puzzled, anything i can do about this?