  We study the high temperature series expansion of the Berkooz-Douglas matrix
model which describes the D0/D4--brane system. At high temperature the model is
weakly coupled and we develop the series to second order. We check our results
against the high temperature regime of the bosonic model (without fermions) and
find excellent agreement. We track the temperature dependence of the bosonic
model and find backreaction of the fundamental fields lifts the zero
temperature adjoint mass degeneracy. In the low temperature phase the system is
well described by a gaussian model with three masses $m^t_A=1.964 \pm 0.003$,
$m^l_A=2.001 \pm 0.003$ and $m_f=1.463 \pm 0.001$, the adjoint longitudional
and transverse masses and the mass of the fundamental fields respectively.
