I am working on a fix on the double RSS feed in CS. One of the things I have to do is support a single site domain: dbvt.com. Screw the WWW. I stopped using that in 1996 myself. Apologies to WWW affectionados.
What this means is that if your feed suddenly dries up, chances are it's because the removal of generating a www.dbvt.com-based feed prevented your reader from downloading new posts. Depends on the reader and the intricacies of RSS of which I'm not too sophisticated. So please, if you no longer get new posts, please update your feed to http://dbvt.com/blog/rss.aspx.
The change I am making (which I'll describe later), may or may not work in eliminating the duplicate feeds. The point is that if the feed stops spewing my wit and wisdom, please update the URL.
Peace and feed on!