hosting my website under very known provider, got the same error when upgrading to 6.1.1

[SecurityException: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) +0
System.Security.CodeAccessPermission.Demand() +61
System.Environment.get_MachineName() +66
ClientDependency.Core.CompositeFiles.Providers.XmlFileMapper.GetXmlMapPath() +31
ClientDependency.Core.CompositeFiles.Providers.XmlFileMapper.Initialize(HttpContextBase http) +114
ClientDependency.Core.Config.ClientDependencySettings.LoadDefaultFileMapConfig(ClientDependencySection section, HttpContextBase http) +124
ClientDependency.Core.Config.ClientDependencySettings.LoadProviders(ClientDependencySection section, HttpContextBase http) +411
ClientDependency.Core.Config.ClientDependencySettings..ctor() +94
ClientDependency.Core.Config.ClientDependencySettings.get_Instance() +78
ClientDependency.Core.Module.ClientDependencyModule.LoadFilterTypes() +37
ClientDependency.Core.Module.ClientDependencyModule.System.Web.IHttpModule.Init(HttpApplication app) +55
System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +406
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +188
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +295
System.Web.HttpApplicationFactory.GetPipelineApplicationInstance(IntPtr appContext, HttpContext context) +56
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +231

Looks like problem is under getMachineName()
come on I can not ask MachineName when it is not mine, but providers one...

Will it be fixed?
When?

Since 6.1.0 DNN Uses the Client Dependency Framework (http://clientdependency.codeplex.com/) which is great, but is uses System.Environment.MachineName. This requires EnvironmentPermission, which I don't have on my hosting machine.

But why does DNN has the name in the Host Settings Dashboard? Because DNN Uses System.Net.Dns.GetHostName().

Don't upgrade if you run in a Medium Trust environment. Just put this in a testpage (TestSecurity.aspx) and put in on your host machine to make sure your host has the right permissions:

 <%@ Page Language="C#" AutoEventWireup="true" %>
<script runat="server">
  protected void Page_Load(object sender, EventArgs e){
     try{
        this.Controls.Add(new LiteralControl(System.Environment.MachineName));
     }catch (Exception exc)
     {
         this.Controls.Add(new LiteralControl(exc.Message));
     }
   }
</script>

I am using 1and1  (.com)

and I think it is in Medium trust already (but I am not sure) will investigate and let U know asap