Some Moslem scholar predicts it will happen in 2007. He says the Koran says so. I saw a thread about it here on FR earlier this afternoon.
Sorry I would provide a link, but I am not sure how to do so. I am NOT a computer geek; I'm barely computer literate. :)
That would be here:
http://www.jpost.com/servlet/Satellite?pagename=JPost/JPArticle/Printer&cid=1111980180248
I wonder if a nuke in just the right place could trigger it. I wonder if our enemies might be thinking about a "plausibly deniable" disaster being visited on the US