Sounds like a fairly straight forward case of there being a few dodgy units out there to me - not exactly the biggest surprise when you consider the number of units produced and the short development/testing cycles people have to get new gadgets out these days. Apple aren't the only ones this sort of thing has happened to and they certainly won't be the last.
Watching all the fanbois go up in flames (bah-dum-tish) was however pure internet entertainment!
"nuh-huh didn't happen!"
"they are using it wrong"
"its normal!! laptops can browse the internet and gets hot - the iphone can browse the internet and gets hot. Same thing innit?"
"it's cos of the mega-fast hardware - it just shows how awesome it is"
"YOU'RE ALL JEALOUS!!"
As I expect there will be some of the same along here shortly I'll grab some popcorn :)