Yep. Mine got so hot I stopped using it. I was trying to charge my N900 from a Power Monkey and concluded that I wasted more power in heat than I'd used charging the N900. Oh, and it was scarily hot

Edit: Come to think of it, I wonder how it can dissipate so much heat? It shouldn't need to be more than a bunch of wires and connectors, although I suppose it might need to be safe enough to cope with two chargers being plugged in simultaneously by the morbidly curious, so it may have some circuitry to deal with that.