Somehow every now and then in our blog we are having css -link like this:
< style type="text/css" media="screen" >
@import url( http://www.URL.com/wp-login.php?redirect_to=/wp-login.php?redirect_to=/wp-admin/wp-login.php?redirect_to=/wp-admin/wp-login.php?redirect_to=/wp-admin/wp-layout2.css );
< / style >
So nothing works then. Only thing you need to do to fix this is go to Settings -page and press "Save".