"This was REALLY not kosher"

I can't claim to know a lot about Judaism, but even I know that this is very, very wrong:

A grocery store in Manhattan made a food faux pas, advertising hams as "Delicious for Chanukah."

Chanukah, an alternate spelling for Hanukkah, is the eight-day Jewish holiday that began Tuesday evening, and hams as well as pork and other products from pigs can't be eaten under Jewish dietary laws.

A woman who saw the mistake over the weekend at the Balducci's store on 14th Street took pictures of the signs and posted them on her blog.

Jennifer Barton, director of marketing, told The Associated Press on Thursday that the signs were changed as soon as the error was noted.

How was it that nobody noticed "the error" as soon as the signs showed up at the store? I mean, "No pork allowed" is pretty much the most basic rule when it comes to the Jewish dietary laws, right?