"Restrictions Do Not Allow Explicit Content"???

Downloaded a few podcasts yesterday. Listened to one of them on the ride home last night (from my iPhone, after syncing). Tried to pick up where I left off this morning, and these particular podcasts are "grayed out" and, when tapped, say "Content Not Allowed. Restrictions do not allow explicit content". I checked my iTunes preferences (Parental), nothing is checked, no restrictions. These are the very same podcasts I was listening to 12 hours ago! And they play fine on my computer, within iTunes. Just won't play on the iPhone after syncing. And it's just these podcasts (Start Up by Alex Blumberg -- far from explicit or pornographic). All the others are playing fine on the iPhone.

Any ideas?