Very odd - it will still play CD's just not DVD or XBox games
---------- Post added at 21:02 ---------- Previous post was at 20:59 ----------
If you stick a game or DVD in it buzzes for a few secs and then says 'Open Tray' on the dashboard.
There is even an MS article on the problem which helpfully says at the end 'get it serviced by M$' - £60 thank you, unless I can prove it was not unwrapped until 25 Dec.