If, like me, you’ve set up Feedburner with a Subtext 1.9.6 blog, point FeedBurner at RSS.aspx, not at Atom.aspx. Most things work whichever way you do it, but when you view an article in Google Reader, it won’t include a link back to the original article. As far as I can tell, this is because the Atom feed uses rel=self rather than rel=alternate. This appears to be fixed in the latest code base, but that means it’s part of the huge 2.0 release.
It will take a while for FeedBurner and Google Reader to catch up. I mean hours, not minutes, but it will fix the problem.