The rumor in the medical circles, --that I guess would not be disclosed publicly, in order to avoid a repeat of massive Arab demonstrations defending their "Honour" --is that he contracted a deadly bacterial infection of the circulatory system ( which normally attacks only newly bon with week defenses) as a result of having weekened inmuned system as a result of AIDS. How he contracte that last one is anybody's guess, ( sex, needles, contaminated blod transfussion ?). Not politically correct.. ( except I guess for the transfusion possibility) but it might well be the truth nonteless.. let us see what Haartz censors do with this information!
from the article: Arafat aide calls on Chirac to reveal truth about Arafat's death