10 Replies Latest reply: Aug 7, 2012 3:53 PM by William Lloyd
razzz Level 1 (10 points)

What a joke. This has to be the worst upgrade I have ever gone thru since becoming an Apple user. 


My system was stable and fast until I upgraded to Mountain Lion (ya sure why did I upgrade... why not?). With this upgrade I also had to update VMWare Fusion. Maybe thats the root of the problem but bottom line, my system is slow as a snail and is virtually unusable. Whenever I have a couple things going at the same time (i.e. Mail, QBs in Windows, then Safafi) I see that **** rainbow ball all the fricken time.


Whats even more fricken mind boggling is how my Macbook Pro which is a little older than my iMac runs fine.


Is there an easy way to uninstall POS Mountain Lion (never thought I'd say this about a Apple product)?

iMac, Mac OS X (10.7)
  • thomas_r. Level 7 (30,717 points)

    You have a problem with that particular system that needs to be fixed.  See Understanding upgrade nightmares.

  • William Lloyd Level 7 (21,040 points)

    Uninstalling is a challenge.


    It would be a lot better to find out what's causing the problem in the first place.


    A lot of the problems people are having around stability have to do with 3rd party extensions that are incompatible with Mountain Lion.  Try entering this from the Terminal and pasting the results here:


    kextstat -kl | awk ' !/apple/ { print $6 } '


  • Gnarlodious Level 4 (3,220 points)

    I sympathise, but you are an "early adopter" as we say, which is a complimentary way of saying "sucker". Every version of OSX has been a big mess at the beginning, early adopters work out the bugs and by 10.x.3 it is pretty good. If you don't have the patience for beta testing software, wait 6 months next time.


    There are applications I can't run. For example, Google Chrome Helper runs my processor at 100% and it overheats the computer which runs like a turtle. I had to disable that application, and it is fine.


    You can open Activity Viewer in the Utilities folder to see what is slowing you down so bad. There is a column for processor percentage that's useful for diagnostics. There is a quit process button once the bad process is selected. Some processes, however, relaunch immediately. Those nasty things require special intervention.

  • baltwo Level 9 (62,215 points)

    Failed to follow sane and safe upgrading practices and don't have either a bootable backup/clone or Time Machine backup of your previous Lion installation?


    Tsk, tsk.


    See these for more details:






  • razzz Level 1 (10 points)

    I know, I know. Call it stupid but since becoming an Apple user I became more confident and less worried about issues. You know, compared to my Microsoft days. I'm going to start doing some troubleshooting now. Thanks.

  • razzz Level 1 (10 points)

    Thanks for the ideas. After taking some deep breathes I'm going to start doing some troubleshooting now.

  • razzz Level 1 (10 points)









  • William Lloyd Level 7 (21,040 points)

    Air Display has some cases where it will kernel panic a Mac:


    http://blog.avatron.com/post/28135386805/kernel-panics-mountain-lion-and-bluetoo th


    You may wish to try uninstalling it and seeing whether it helps.


    Are you sure you're up to the latest version of VMware Fusion?  Only versions priori to VMware Fusion 4 used kernel extensions, to my knowledge.  Try uninstalling VMware Fusion entirely for a bit and re-running that command and seeing whether the VMware extensions are gone, and whether your system starts behaving better.

  • razzz Level 1 (10 points)

    So you confirmed what I thought and tried. I uninstalled Air Display. Also, after the uninstall I needed to perform a restart and the kernel extensions were gone. However, VMware wasn't running. Once I loaded VMware the kernel extensions came back. I'm running the latest version 4.1.3.


    Here's the good news. So far, the system seems to be running better and I'd say normal. So, either the removal of Air Display (which I don't really need anymore since I'm running dual displays now) did it or the system restart.


    Bottom line is my faith in Apple is returning and my headache is subsiding. Thanks!!

  • William Lloyd Level 7 (21,040 points)

    Glad we were able to help.  The root of the problem is that computers are complex beasts, and while Apple can test with thousands of third party products, they can't necessarily test with all of them in pre-release testing.


    Kernel extensions plug in at low levels of the OS and while Apple will disable ones they _know_ cause problems, they don't necessarily have the time to test or the ability to test with them all (you have to figure, there are literally tens of millions of software configurations on end user systems).  So a little troubleshooting can go a long way.


    Hopefully the 3rd party software vendors can update their software in short order, so all end users have a better experience!