From a thread over an internal alias today..

Some have noticed that in V1 we give you access the user’s environment variables… We are fixing it in Whidbey where you can get the user or machine



Notice you can do this in V1 with:

                using (RegistryKey environmentKey =

                       Registry.LocalMachine.OpenSubKey(@"System\CurrentControlSet\Control\Session Manager\Environment", false)) {

                   string value = environmentKey.GetValue(variable) as string;

                   return value;