I'm gonna go on record here officially guessing that the main cause of the dimmer problem is due to the AC adapter plug insertion. I think it keeps reporting either a one or zero to the player, but I'm not sure how often the player polls the switch. If I had to guess, from the way my dimmer screws up all the time, I would guess it polls the switch about every second or so!?!?!? Does this sound like it could cause the problem!?!?!?!