On the RSS feed on recent changes I get empty edits, which are actually changes that are made on Wikidata:
For example I see now an edit on the arctile "Ruta" where the feed shows a change of revision with the following link to view the changes:
It is obviously the same revision. Moreover, the change is shown to be made at "15:29, 14 april 2013", which is exactly the same time and user that is shown as the latest revision on Wikidata (at this moment):
I'm not sure whether this is actually a real bug or some "feature", but it doesn't seem to serve any purpose since my RSS client is being spammed with this useless information. I'm also not sure when this started to occur, but I guess after the roll out of version 1.22wmf1. With the previous version(s) I was not experiencing any of these issues.