I just noticed that. The pedal is off, and the adaptor is a little hot (not "plastic about to melt" hot, but still kind of hot). I've got a bunch of other pedals plugged into separate adaptors, into the same power bar, and none of them run hot. The one running hot is plugged into my only non-true bypass pedal. Could this be the reason why (pedal draws power even when turned off)? Should I worry about that? Take note that I'm using the pedal's original adaptor, not some cheesy generic adaptor that doesn't put out the right voltage.