I am not even going to provide an excuse for the huge gap in blogging, but am just going to try and break out of it.
Came across these gems that describe the Silverlight Security Model. If you are done installing Silverlight, playing with Expression and VS, it is probably time to go deeper and understand the security model of how Silverlight executes code and what .NET Code Access Security rules apply (and what don't).
Check out these articles from the .NET Security Blog:
The Silverlight Security Model
Silverlight Security II: What Makes a Method Critical
Silverlight Security III: Inheritance
To round up, there is the Silverlight Security Cheat Sheet, but make sure you read (and understand) the above articles first. I am going to try and explain out some of my understanding in later posts. Well, hopefully.