Hmmm, maybe your polarity in your house is messed up? In AC the neutral should be the longer/taller leg in the outlet. I haven't heard of any devices being sensitive to AC polarity in a very long time but its worth a try to flip the plug and plug it in the other way if you can (older outlets). Otherwise get an outlet tester for $5 at your local big box and test them. It might light up a reverse neutral on all of them except the one that works. Its easy to swap the black and white wires on the back of the outlet to reverse it.