  The Bousso entropy bound is investigated in a static spherically symmetric
spacetime filled with an ideal gas of massless bosons or fermions. Especially
lightsheets generated by spheres are considered. Statistical description of the
gas is given. Conditions under which the Bousso bound can be violated are
discussed and it is shown that a possible violating region cannot be
arbitrarily large and it is contained inside a sphere of unit Planck radius if
number of independent polarization states $g_s$ is small enough. It is also
shown that central temperature must exceed the Planck temperature to get a
violation of the Bousso bound for $g_s$ not too large.
