Did the prophet Muhammad PBUH really die from poison? According to a Hadith this is true?

What does the Quarn say on this matter ?

As far as I know, nothing is mentioned on this matter

Here is some information from several sources.
There seems to be a huge difference in views, between Shia and sunni. (understandably so)

The Death of the Prophet (www.islaam.org.uk) (http://www.sunnahonline.com/ilm/seerah/0001.htm)
Islam Watch - "Did the Prophet Die While Making-Love to Aisha?" by Ayesha Ahmed (http://www.islam-watch.org/AyeshaAhmed/Did-Prophet-Die-While-Making-Love-to-Aisha.htm)
Death of Prophet Muhammad (632 AD) (http://www.cyberistan.org/islamic/death.html)

Thanks for the links