Hypersmurf
Moderatarrrrh...
Eric said it's medium. In 3e, it was small.
Careful, he's using 3.5 terminology.
In 3.5, a Medium dagger is not a dagger sized for a Huge creature, it's a dagger sized for a Medium creature (ie, the equivalent of a 3.0 Tiny dagger). A Medium greatsword is a greatsword sized for a Medium creature (ie, the equivalent of a 3.0 Large greatsword).
So a Medium whip could still be a light weapon, the equivalent of the 3.0 Small whip...
-Hyp.