nicoled wrote:
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I'm glad they are acknowledging it, but I wish they would acknowledge that it isn't just for 13"retina users, others are having the issue too.
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I don't think that Apple, as a company, have acknowledged it. All that has happened is that the tech guy you contacted chose the usual two replies to any fault: "SMC reset and a NVRAM reset."
There have been mouse and cursor problems for many people since Lion in mid 2011. People have told Apple's support via their feedback site and otherwise many time since then but no solution (just the stock reply above but only to support requests).
I know that Apple read the posts on the discussions, and should be responding, but the only evidence that I have of them reading the posts over the years is the ocasional deletion of a post that is uncomfortably critical of Apple.
Now, in Mavericks, many people are finding that their Firewire external drives will not sleep, not even if you drag the icon to the Trash. You have to switch their power off! I don't expect that will be solved either. I have reverted to Mountain Lion, no problem (except the mouse problems of course) because I haven't found much in Mavericks that is better than Mountain Lion.
The mouse problem will never be solved. Just grit your teeth and curse Apple.
For Mountain Lion see:
https://discussions.apple.com/thread/4142250?start=405&tstart=0
For Mavericks see:
https://discussions.apple.com/thread/5470315?tstart=0