Sounds like a new system....Between it being just 2 months old, and being in pristine condition, it sounds like you got a new one.
As far as I know, no one on this forum has ever had more than one X360 RROD on them. I'm on #2, but considering what I've put mine through....
KN, do you like the Eternal Sonata demo?
Back from the dead, I'm afraid.