Was it a Jasper?
Edit: never mind, see your info. Anyways, I was wondering because I'm coming to the conclusion Jaspers are very reliable (RROD basically a solved issue with them).
I recently bought a new Elite, and one thing that bugs me is it seems to have an undue amount of vibration caused by the DVD drive. Just to the touch, it seems to me I feel much more and stronger vibration through the case than is "right". And I cant imagine that vibration is good for the components. It's also a bit frustrating in that it works fine and probably will for a while, so it's not a cut and dried problem.
I remember having an Xbox 1 with a similar issue, and it worked fine forever, so I dunno.