I have an Oct 05 XBox 360 that my brother bought me for xmas last year (to return the favor I got him a PS3 - whole other story
). I've been a pretty regular user of it.
Recently (after 1080p upgrade from XBox Live - widely as reported), it started experiencing startup issues. At first it would happen occasionally (power up - nothing happings, or you get 3 red lights on ring of lights), then it started happening more frequently, and finally it stopped working completely 2 Sundays ago.
At that point, I called XBox support and explained the problem (none of the issues reported in some of the other posts in terms of being difficult to deal with). They said they would replace it at no cost (I keep the HDD, controllers etc) and they'll ship me the box. They did say that it would take a minimum of 4 business days. It is now 8 business days later and I haven't received it yet so I will be calling to follow-up
I am a bit concerned about turnaround time given what I've read here... so hopefully I'll get the new unit back before the holidays... It sucks cause I just got XBox Live a few weeks ago and I just received (from GetGames.ca) FEAR and Gears of War so I really haven't been able to enjoy them yet
I will post an update on how things progress...
BTW I read in OXM that Microsoft has officially admitted that there is an unusally high number of defects and as a result they are replacing units made in 05 at no cost and reimbursing customers who have already paid for repair... so anyone who paid to get their 05 unit repaired or replaced should look into getting reimbursed