[Mr. Mojo]

....the origin of a number of e-mails claiming that Barack Obama is a Muslim.

Look Danielle, considering B-HO's father was a Muslim and all available evidence suggests for some years he had a reasonably Muslim upbringing under the auspices of his Indonesian step-father it shouldn't come as a surprise that such rumors (of him currently being a Muslim) flourish. That being the case, attempting to locate its origins is a fool's errand -- way too many sources.

[muawiyah]

I doubt Obama's own brother in Kenya (whom he never met until adulthood) cruises the net reading FR but he firmly believes Obama had a Moslem upbringing and has said so publicly.

Of course he doesn't know, but he said it, and he may well be the "source" of all the rumors.