Can the users who are experiencing this problem tell me exactly what you are doing when your mouse cursor disappears? Like if you are surfing Youtube videos and whether you are viewing original size or full screen or whatever you are doing. I contacted Apple about this problem and they are not aware of it, therefore there will be no fix for this until Apple has more information on what could be the cause.
If you have Apple Care that is still valid, please contact them and go through the troubleshooting techniques and give us on MacRumors some good feedback on what could be causing this. I would do it but my Apple Care has ran out and I will be getting a new iMac probably when they ever release them. Also tell me if you are using any kind of 3rd party mouse app or program on your iMac or MBP or whatever you are using.
Any and all feedback would be helpful to get this resolved or we may be stuck with this problem until it becomes a much bigger problem.
What it does on my setup, I have 2 monitors and for example if I am surfing a youtube video and move my cursor over to the other monitor it does not show up until I click on that 2nd monitor's desktop. Other times I am surfing any site, and it just disappears. But I will now be more detailed in my response on here in order to help figure out this bug with ML, if it is in fact a bug.
Thanks everyone who leaves feedback on here.
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this sometimes happens to me when im watching a flash video. like i dont see the actual cursor when i move over the play button but i can see that its over the play button because it highlights the area where my cursor is supposed to be. hard to explain really ...
Mine has done that as well. Very frustrating to say the least.
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Yea.. I believe so. it happened to me in lion.. whenever I enter a fullscreen for a youtube video on one monitor I lose the mouse cursor on the other monitor.
Mine does that as well.
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I've just noticed this too. It seems to be happening often when Flash is loaded up in the browser, though not sure if this is the cause or not.
wondering if the cause is in flash and not in ML. Just a thought.