Silverlight alpha gotchas
[Update: I must have been drinking when i wrote this :) It should be local domain because you cannot get objects from a remote host through the BrowserHttpWebRequest]
These 2 just made me loose +45 minutes:
1. if you're using the BrowserHttpWebRequest to download files from a remote domain, then make sure you're testing your page from a web server (the internal server that comes with VS works, but you'll start getting the object is not on the correct state exception -or something like that - if you try accessing objects from a remote host).
2. The same holds true if you're loading a remote wmv file on a MediaElement.
Not sure if there's any explanation for these, but it did steel me 45 precious minutes.