Debugging Blogspot+Silverlight+Dropbox issue

I traced my browser calls when it loaded the demo silverlight app and I got the following:

Request URL:http://dl.dropbox.com/u/4186718/Nitin.Spike.XAPHosting.xap
Request Method:GET
Status Code:200 OK
Response Headers
Content-Type:application/octet-stream
Date:Sun, 19 Sep 2010 06:12:06 GMT
Server:dbws
accept-ranges:bytes
cache-control:no-cache
content-length:4379
etag:10n
pragma:no-cache
x-robots-tag:noindex,nofollow

The problem is that the Content-Type is application/octet-stream, it should have been application/x-silverlight-app. Okay so we know the problem, how do we fix it? I am using dropbox, are they suppose to push with correct content-type or do i need to configure it somewhere... I have asked this question in their forums...