If you subscribe to Approaching the Aro gTér via Google Reader, Feedly, or some other RSS feed reader, you will need to re-subscribe.
(Otherwise, this post does not apply to you, and you can ignore it!)
In your feed reader, delete the existing Approaching Aro feed. (Also the comments feed if you subscribe to that).
Then re-subscribe by clicking on one or both of these links:
Sorry for the hassle! The reason for this is that I had been using Google’s FeedBurner service, which has become increasingly buggy, and it seems likely that they will soon shut it down completely. So I have switched away from it.