I think you're right on that. I rarely use Firefox.

>Now I am confused. I was under the impression that xbaps will run in Firefox with the IE tab installed and .net framework 3.5. In fact, I have some old code from a discussion online to detect the presence of WPF inside the browser that I meant to test, but haven't gotten to:
>
>

>  if (navigator.plugins["Windows Presentation Foundation"])
>        {
>             // redirect to your .xbap
>        }
>        else
>        {
>            // redirect to .NET 3.5 download page
>
>        }
>
>

>
>I haven't researched it since, so is that not the case?
>
>And there is also this:
>http://msdn.microsoft.com/en-us/library/bb909867.aspx