  In a previous paper we discussed corrections to Hawking radiation from a
collapsing shell due to quantum fluctuations of the shell and the resulting
horizon. For the computation of the quantum corrections we used several
approximations. In this paper we take into account effects that were neglected
in the previous one. We find important corrections including non-thermal
contributions to the radiation at high frequencies and a frequency dependent
time scale at which the emission of thermal radiation of frequency $\omega$
cuts off. Such scale tends to infinity in the limit of a classical shell. The
fact that one has almost from the outset non-thermal radiation has significant
implications for the information paradox. In particular the amount of
non-thermality is considerably larger than what we had estimated before. A
naive estimate of the evaporation time leads to a much faster evaporation than
in the usual Hawking analysis.
