I found this comment on another sie reportingthe same story: All repairs and maint are done through a third party company, Jabil, in Renoysa, Mexico. They have a specific set of instructions that they follow assembly-line style, and one of the first steps in that is they scrub the unit down with rubbing alcohol and remove all stickers and so forth that are on it. Any letter with the console would have been disregarded since the workers don't speak English, and are much more concerned with keeping up with the mass amount of work to be done, because they can be fired very easily if they don't. Even in an unusual case like artwork and signatures, the workers have better job security just pushing it through like usual than stopping to ask.
manekineko2 writes "In the latest case warning of the perils of investing in DRM'd media, an owner of an Xbox 360 reports that after his Xbox suffered the infamous Red Ring of Death, it was replaced by a new system with a different serial number. Upon receiving his replacement, he found that he could only access the media he had purchased from a specific account. He also received the run-around for months from customer service before his case was escalated, only to be informed that there is no ETA for a resolution, there is no way to receive status updates on the process, and there is no compensation that will be granted. Given claims that the Xbox 360 defect rate is as high as 1 in 3, has anyone on Slashdot gone through this as well after getting their system exchanged?" Update: 02/14 17:11 GMT by Z : An emailing user noted that the original summary was not very accurate; rephrased to be more in-line with the situation.