BBCs 'Watchdog' consumer programme ran tests on various old, and new, Xbox 360s with differing results...
Read the full post here on the BBC site... plus video
Blame the family
Microsoft responded with this statement..."Microsoft reaffirms its longstanding position that it's not been able to ascertain any defect in the Xbox 360 console that causes concentric gouges (that is, 'scratching') on discs when a console is in a stationary position. Indeed, despite extensive testing and examination under static operating conditions, Microsoft has never been able to reproduce the concentric gouge that causes disc readability problems or find any such defect in consoles returned by consumers for examination. It's only with the movement of a console that such 'disc scratching' may occur. Consequently, Microsoft provides notices on the Xbox 360 console itself, in the user manual, and on its website - warning consumers not to move the console with a disc in it while in use."