  Heavy quark energy loss in a hot QCD plasma is computed taking into account
the competing effects due to suppression of zeroth order gluon radiation below
the plasma frequency and the enhancement of gluon radiation due to first order
medium induced Bremsstrahlung.
  The results suggest a surprising degree of cancellation between the two
medium effects for charm quarks and provides a possible explanation for the
null effect observed by PHENIX in the prompt electron spectrum in Au+Au at
$\surd s=$ 130 AGeV.
