Has this happened to anyone else????

So I got the infamous 3 red lights of doom but I have been reading on hear and thought it would happen eventually. So I called microsoft and they told me all the info. Well today I got what the paper said was a new xbox 360 though it was fishy cause it had black marks on it.

Well, anyway so I get on Gears I play one game and then all of a sudden my 360 restarts. So I tried to play again and it wouldnt read the disk so I tried to take it out and the tray wouldnt respond at ALL! Well I called support and they are sending me a box so I can send them the console without me having to pay. But I am getting very restless and people havent been complaining about the other console like this so... Do u think my 3rd box will finally work or am I cursed or something?

threee red lights only come when when u knowck over the 360, you hit it, u jam a disk, your power ashuts off while playing or u do something with ur power cable... and yes it has happened to me and my new xbox actually worked so no worries it should all be good