Abstract
Author of ref. 1, M.R. Setare (JCAP 01 (2007) 023), by redefining the event horizon measured from the sphere ofthe horizon as the system's IR cut-off for an interactingholographic dark energy model in a non-flat universe, showed thatthe generalized second law of thermodynamics is satisfied for thespecial range of the deceleration parameter. His paper includes anerroneous calculation of the entropy of the cold dark matter. Alsothere are some missing terms and some misprints in the equations ofhis paper. Here we present that his conclusion is not true and thegeneralized second law is violated for the present timeindependently of the deceleration parameter.
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