I have added some new samples to my library. Enjoy! PAEF is located here: http://plugins.codeplex.com/
Object-Oriented State Machine sample. It show how to use Abstract State Machine idiom to safely enumerate throught file & direcory states.
Pi.Window sample. It show how easily to imlement the window state manegement solution. As well as how to store and load windows between application UI sessions.
Pi.UI sample. It shows how to create multi-threaded parallel work items, how to sync it with UI, how to use parallelism in applications using framework library approach.