How to Fix Netflix Watch Instantly 'Individualization Failed' or Error 8152 on legitimate Apple hardware.

I’m posting this because I could not find the solution to this problem anywhere online, and I hate having to call into customer support to get a step-by-step answer. I purchased a Mac Mini for use in my home theatre around the same time that my Boxee (www.boxee.tv) beta invitation came in, so naturally, the first thing I did was install it. I never bothered to test Watch Instantly functionality in the browser before I tried it in Boxee. Upon attempting a Watch Instantly session in Boxee I was greeted with the famous ‘Individualization Failed/Error: 8152′ message. This error seems to be primarily affecting Hackintosh users, but a few of us with legitimate Apple hardware are getting it too. It has to do with how Silverlight verifies your network...