This line of code won't execute in a published .swf. Test movie (ctrl + enter) works fine.
j_session = new URLVariables(); j_send = new URLRequest("https://web.e-fon.ch/portal/j_acegi_security_check"); j_loader.load(j_send);
I'm assuming it's some type of network permission. Ideas?
upload to a server and test or add the file that contains that code to your trusted files.
also, you may need a cross-domain permissions file if that is a cross-domain request (if it's not, use a relative path) and you expect something returned to your flash.
also, you're not defining or sending any variables which may or may not be an issue.