He was charged with illegal porn but I believe he was acquitted. At the time, it was stated that he had a "vast collection of erotic art of naked males." His friend, the actor who played the principal in Ferris Bueller's Day Off (I forgot his name), definitely had child porn. I don't know whether or not Reubens actually had kiddie porn but I am pretty sure he was not convicted.
In any case, Paul Reubens never bothered me as much as some of the other sickos. He never actually became a spokesperson for deviancy-the stuff he engaged in was in his own personal life.