http://shawnblanc.net/feed -

With their acquisition of Feedburner last summer, Google has begun slowly migrating all Feedburner feeds over to new servers and new systems. The migration should result in more reliable feed delivery for you and more accurate subscriber stats for me.

You all should continue to receive new posts, since the old Feedburner URL should continue redirect to the new one indefinitely. But, to be sure, you may want to update anyway:

http://shawnblanc.net/feed