Currently Being ModeratedNov 15, 2012 9:21 AM (in response to sterlingfive)
I have the same problem and it occurs in many different applications. I haven't been able to find the cause and it is very frustrating. I never had this problem until I switched to Mountain Lion. Has anyone found a cure for this?
Currently Being ModeratedNov 15, 2012 9:24 AM (in response to chipperz)
Is it only in certain applications for you, or anywhere you have a cursor? I haven't seen it in anything else, but I haven't really installed any other applications yet. If it happens in all applications with a cursor, I will consider downgrading back to SL.
Currently Being ModeratedDec 7, 2012 5:49 PM (in response to sterlingfive)
I have the same problem, but it only occurs in mail. The whole ML-release is very unstable. Especially for us with Geforce graphics cards. My computer rebooted 3-4 times an hour before I found a rudimentary patch at Nvidia. It helps a bit. Now it only reboots ones or twice a day. An issue Apple has not addressed yet. Apple needs to come out with some serious updates to ML. Users should not have to go to Apples hardware suppliers to get help with their Apple products. Anything to do with Apples original core business is on the back burner. It's all iPads, IOS and App store now. That's where the money is. Anything for the Pro-community is completely neglected. Don't expect a solution for something as minor as this.
Currently Being ModeratedDec 20, 2012 10:38 AM (in response to sterlingfive)
I've got the same issue. Just upgraded my 2010 17" i7 Macbook Pro to an SSD with Mountain Lion. When I move my cursor over Mail's new message window, or over a body of text inside Mac Mail, my cursor becomes extremely choppy. It strobes as if the computer doesn't have enough processing power to move the cursor. When I use my cursor over any other text in any other application, everything is fine. The bug is in Mac Mail.
I hope this isn't a rare bug because if it is, the chances of it getting fixed are pretty slim, which is a shame because I love Mac Mail. If Apple doesn't issue an update or a fix I will probably move to Microsoft Outlook or another 3rd party mail app.
Currently Being ModeratedDec 21, 2012 12:16 AM (in response to sterlingfive)
Just checked my Activity Monitor, and Mac Mail under Mountain Lion will sometimes take 100% of my CPU while sitting in the background on idle. And that's not when it's checking the mail either. It's just sitting there.
Currently Being ModeratedDec 21, 2012 9:24 AM (in response to Trouser Slacksman)
There is another issue with SystemUIserver that is locking up CPU and freezing menu bar items like the clock. Look up "Mountain Lion menu bar freezing" or "Mountain Lion SystemUIserver", you'll see a lot of info. I haven't tried any of the fixes yet, but I am hoping to find a permanant solution to both the issues we're talking about here.