My E-P2 does get extremely hot, so hot in fact that I have to force myself to hold it in my right hand and continue taking pictures.
I use the camera for concert photography almost exclusively. This means I have to carry on and cannot stop to let it cool down. The musicians simply wouldīnt comply. On average I end up with 200 to 400 pics in one hour.
So far I have not suffered slight burns as indicated in the manual and the E-P2 keeps on working as usual.
The icon streetshooter has referred to hasīnt shown itself yet. I take it has gone into hiding. After all the heating up may not be a real problem as nobody so far has reported on an E-P gone on fire.
For me a camera is a tool and not a gem around my neck. In case it packs up it will not find a place on the shelf, but
..

A Panasonic FZ-50 I use for classical concerts just gets lukewarm so I have a comparison.