I sent my 360 in on the 9th, and got one back today already, the 18th. Somewhat impressive based on what I've heard from others. But I'm confused. The letter said they sent me a replacement 360, but the serial number on this one is the same as my old one as far as I know unless they change that on the Xbox support page once they picked a new one for me. However, if it is the same one I noticed the MFR date on the Xbox I got back today says July 20th, 2006. I got mine in May 2006. I suppose it doesn't matter as long as when I hook it up it works, but talking about confusing me.