I already read this rumors about Arafat's would be death by AIDS. You can be quite skeptical. AIDS is a long lasting desease that cannot be hidden. It takes at least two or three years (when not cured at all) before you die, and it shows. No one noticed such a thing on Arafat's aspect, and there were no rumour at all BEFORE Arafat's death. All began after, on Israeli siede. It is therefore very likely that this rumor is an Israeli invention to do harm to his prestige amongst Palestinians, and to suggest he was homosexual. But sorry, this is not based on any serious argument. Arafat like every important political fighter was 100% devoted to a cause and did not have a lot of time to waiste for his private life. He married and had a girl. The rest sounds like a mere forgery.
US rally shows support for ex-Marine held by Iran on spying charges (AP)
from the article: Arafat aide calls on Chirac to reveal truth about Arafat's death