One of the other stocks I follow is HCC (on the NYSE, too). If you check its Detail Quote and Recent News, you'll see that it recently increased its quarterly dividend 25% from $0.04 to $0.05 per share. The day of its announcement, Yahoo was already reflecting the $0.20 annualized dividend it's currently showing.
I stand by the explanation given in my previous posting. Get those "Free Ted K." posters ready, folks. We've got sheer intransigent stupidity at work here on the part of the data provider.