Here's my experience with the power cord. Went to the xbox web site, ordered it, got it (in Belgium), so far no problem.
But the power cord just didn't work. It was blinking red then got green, and the test switch made it blink red then shut it off. While the power led was always off.
Those aren't even explained in the manual (blinking red then getting green?)
Anyway, I then entered the customer support loop. That is, I was send from 1 customer support # to another, usually to end up in an automatic # explaining me how to GET my power cord mailed.
Basically their french-speaking customer support just didn't know shit about the cord replacement, and made me enter their loop until I gave up. And emailing them gave me a nice 'you should phone-call instead' back

Back to the old cord now.. just hoping it won't fry. Problem is that, meanwhile, I've messed with the power cord, removing it and plugging it back several times. From what I've read here, it could be the cause of the problem, and I wouldn't have done that if M$ hadn't bored me with their stupid letter in the first place.