In this statement by Archbishop Silvano Tomasi it appears that the Vatican is currently giving some (admittedly mild) opposition to the "defamation of religion" push by the Organisation of the Islamic Conference (OIC). It's all very lukewarm, and we know that the Vatican has supported various kinds of restrictions on free speech in the form of blasphemy laws and/or religious vilification laws. Still, the concept of "defamation of religion" goes further, and it's nice to know that even the Vatican opposes it, or at least wants it clarified. I've suggested in various places - at least in the occasional comment on the interblogs - that the Vatican supports the idea, but it looks like I was wrong.
Doubtless the Vatican's take on the issue will become clearer over time. But for the moment at least, I withdraw any claim that it supports the OIC concept. That doesn't appear to be right. I must give credit where credit's due.
Edit: That said, I'm not much comforted when I see a Catholic country such as Ireland attempting to enact a law like this.