Isn't this old news? I heard about exploding nokia phones many months ago. Nokia claimed cheap 3d party batteries were the problem.
Take a look at the related articles on that page if you didn't see them yet. There are several older articles about this happening to other people and about the supposed faulty batteries. One more good reason not to own a cell phone.
Now if I hear of an N-Gage exploding, that would be ten times better than the Xboxes that catch fire.