发生异常后不要刷新会话——NHibernate

I am developing a ASP.NET MVC web app under .NET 3.5, NHibernate and hosted on Windows Azure. When, the webapp is run from the local development fabric it works fine. Yet, when I move it to Windows Azure, every insert performed from the MVC web role ends up with the exception listed below. I am developing a ASP.NET MVC web app under .NE