Exploding iPhones?

I'm sure my lovely little iPhone wouldn't do this to me, but apparently some of them have, well, exploded. CNet reported a few days ago that the European Commission is looking into reports of exploding iPhones. The account in the New York Times says that one person so far has been slightly injured when his iPhone overheated and shattered, sending debris into his eye. So far it seems like the incidence is rare, so you likely don't have anything to worry about. But do be cautious if you're iPhone or iPod touch feels real hot.