I am definitely not an expert on Windows 7. I have been using the beta and it is working well for me. I noticed this post from a several weeks ago about the upgrade thinking. Ars Techinca: Upgrading to Windows 7: what XP and Vista users need to know On a related note, I have been using more and more ClickOnce apps. It is really great when app deployment just works. I think we all appreciate that. All of this got me thinking about Silverlight. As I have posted before, we are actively developing much of our new UI in Silverlight.