There are a number of tools in the Visual Studio Ultimate Edition that help the test mission. These tools are included in the price of Microsoft's MSDN subscription. Some of these tools include Test Manager and Lab Manager.
Test Manager is meant for non-techies to developer test cases. This helps eliminate non-technical testers clicking buttons manually.
Lab Manager gives you an environment to conduct tests. It works with Intellitrace and Hyper-V. Unfortunately Lab Manager does not support Silverlight applications. This tools does require a lot of hardware to run on.
Mysterious Double Instance Hampering Performance - I study the existing code base. Confer with a colleague. Then I determine the optimal plan to change the functionality to load only a slice of all the dat...