I posted a bit about the 360 I almost lost in Microsoft's returns / service system, but it's worth a quick repeat. The unit was second-hand, registered to the previous owner. It went RROD, so I called Microsoft and had the unit registered under my name. I waited 24hrs (that's the time limit they imposed) and I called again to have the unit picked up for repair. They confirmed my details and everything was in order. One month after the unit was picked up I decided to call MS and establish the whereabouts of my unit. "Oh, it's been returned to X address". The address was of the previous owner, who then denied having received it (as you would). This is despite MS confirming my address details prior to shipping and a courier turning up at my door to collect it. Luckily for me, I had taken photographs of the unit prior to dispatch, plus I'd kept all the paperwork. I found out the name of the company in the UK who actually handles the repairs and emailed them. They stated it was still with them, but Microsoft had not provided a returns address. So, between that company, the courier and Microsoft I finally (after 3 months) got a replacement unit back. It was not mine (they admitted as much) and it was an upgrade from the old outputs to HDMI so I didn't complain. These things can happen, so you are probably wiser (if in the event of such an item going RROD) to just replace the motherboard yourself.
