nope, nothing got hot, nor the Dingoo nor the charger. Like I said, I only plugged it for like a second, and the clicking started (or it didn't turned on and when I treid to switch it on I got the clicking, can't remember well).
Besides, when I charged, everything was ok, the back of the dingoo was very mild while charging.
I really hope DX coudl send me a new one.