用户(几乎)总是重定向到登录页面:会话问题还是错误配置?

I have published an ASPNET MVC3 application to a service hosting; i use standard Account controller and i've seen that, during app execution - after a db save - it loses account and the user is continuously redirected to Login page. This does not happen on my devel machineI have published an ASPNET MVC3 application to