Here are some diagrams from the BluePrints book "Sample Application Design and Implementation", and my version of them.
Activity diagram for User Signon and Registration
Original
My UML 2.0 version
Layered view
PetStore_Sample_Figure11.PNG Module view
PetStore_Sample_Figure12.PNG WAF information flow view
PetStore_Sample_Figure13.PNG WAF Runtime view
PetStore_Sample_Figure14.PNG Activity diagram for Sign-on filter
PetStore_Sample_Figure16.PNG Runtime view of the web app
PetStore_Sample_Figure17.PNG