I'm considering taking it in more and more. One question though. I never noticed performance reduction under OSX. Under Windows (playing games), I noticed it and was insane about it over some time until I read that I should reset the SMC. Since I did that, resetting the SMC solves the issue for me until it comes back. But I'll want to show them the reduction in performance under OSX of course. But how? Any idea of how to do something that will show FOR SURE that there is a performance reduction?Hardware is a lot more likely than software to me, or Apple would have issued a "fix" by now, unless the number of affected systems is very low. I think getting case numbers and going back to Apple is the way ahead for many of you. I would just show them the obvious slowdown (in OSX) and ask them what are they going to do about it, likely same as some the Logic Board will be replaced.
Why hardware related, my own 2.3 Mid 2012 Base has no such issue as do many, yet all Retina`s from this period have the same firmware. If the issue was directly related to code an awful lot more machines would be affected and there would be an equally increased amount traffic across the web.
I would go as far to say if Apple don't "side load" something into 10.8.3 I personally wouldn't be holding out for a patch/fix other than face to face with Apple to get resolution.
Thanks
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