Can anyone tell me how the Mpemba effect contradicts the laws of thermodynamics?

http://en.wikipedia.org/wiki/Mpemba_effect

the Mpemba effect, where initially hot water freezes faster than initially cold water. Although the effect might appear impossible, it has been observed in numerous experiments and was discussed by Aristotle, Francis Bacon, Roger Bacon, and Descartes. It has a rich and fascinating history, including the story of the secondary school student, Erasto Mpemba, who reintroduced the effect to the twentieth century scientific community. The phenomenon is simple to describe and illustrates numerous important issues about the scientific method: the role of skepticism in scientific inquiry, the influence of theory on experiment and observation, the need for precision in the statement of a scientific hypothesis, and the nature of falsifiability. It truely violated the laws of heat and thermodynamics specially the zeroth law which says that if a body a is in thermal contact with body b and the body b is in themal contact with a body c then c and a will also be in thermal contact with each other. thus Mpeba effect contradicts it and the law was voilated.