iMac 2011 Speed Issues

Discussion in 'iMac' started by FrogTastic, May 8, 2013.

  1. FrogTastic macrumors regular

    FrogTastic

    Joined:
    Nov 20, 2008
    Location:
    United Kingdom
    #1
    Hello,

    I understand this has been asked before, but I've tried most suggestions if not all without any difference.

    Firstly, I've used windows all my life and moved to Mac afew years ago. So my technical knowledge of OS is minimal to say the least. So please be gentle.

    For the last couple of months I've been noticing my machine getting slower and slower. The only resource hungry app I have installed in CS5 with NIK, but this was installed well before the issues ever surfaced.

    My machine specs are:
    iMac 27inch Mid 2011
    OS X 10.8 Mountain Lion
    3.1GHz i5
    1TB HDD
    16GB RAM

    Steps I've tried:
    Reseating RAM
    Uninstalled unused apps
    Ran Onyx
    Repaired Permissions
    Unchecked "Login Items"
    Unchecked the “Animate opening applications” box

    I've checked Activity monitor, there doesn't seems to be high CPU or RAM usage.

    Please help..
     
  2. justperry macrumors 604

    justperry

    Joined:
    Aug 10, 2007
    Location:
    In the core of a black hole.
    #2

    Make a new User in Users & Groups, logout of your account and into the new one, it is a new Account so let it finish it's setup, 1 minute should do, try if it is better there, if not do a restart and try again, if it is better you know your normal User Account has problems.
     
  3. FrogTastic thread starter macrumors regular

    FrogTastic

    Joined:
    Nov 20, 2008
    Location:
    United Kingdom
    #3
    Thanx, ill give that a shot this evening. Is it then possible to copy across items from the other account - desktop etc?
     
  4. justperry macrumors 604

    justperry

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    #4
    No, I have an idea where the problem lies, I'll tell you later.
     
  5. FrogTastic thread starter macrumors regular

    FrogTastic

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    #5
    Is it everything face the screen?
     
  6. justperry macrumors 604

    justperry

    Joined:
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    #6
    ???

    What is this, kind of weird UK lingo?

    It's files inside the ~/Home/Preferences/byhost Folder.(Likely)
     
  7. rkaufmann87 macrumors 68000

    rkaufmann87

    Joined:
    Dec 17, 2009
    Location:
    Folsom, CA
    #7
    Please do 3 each SMC and PRAM resets. Instructions for those are at:

    https://discussions.apple.com/docs/DOC-3603

    Do each back to back, the first time does not always "take."

    Next restart the machine in Safe Mode, this will clear some caches. It is possible one or more is corrupt. Instructions for that are at:

    http://support.apple.com/kb/HT1455
     
  8. FrogTastic thread starter macrumors regular

    FrogTastic

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    #8
    meant is it everything facing the screen. i.e - User error
     
  9. justperry macrumors 604

    justperry

    Joined:
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    #9
    Reseting SMC is not needed 3 times, Apple does not advise to reset SMC multiple times, NVRAM/PRAM Can be done as many times as you like though.

    ----------

    Ah, got it now.:eek:

    No, it most likely has nothing to do with User Error.

    A few days ago there was a very similar problem, I will give you the link to this thread and a quote from 1 post.

    New 27'' iMac Slow and Laggy for no reason!

    Quote from post #19 - miguelcoma

     
  10. FrogTastic thread starter macrumors regular

    FrogTastic

    Joined:
    Nov 20, 2008
    Location:
    United Kingdom
    #10
    Thanx guys, ill give it a shot this evening. Hopefully all goes well.

    Is there a known cause of this, and any way to avoid it happening again?
     
  11. justperry macrumors 604

    justperry

    Joined:
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    #11
    Can't tell, maybe 10.8.4 will solve this.
     
  12. FrogTastic thread starter macrumors regular

    FrogTastic

    Joined:
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    Location:
    United Kingdom
    #12
    Hello, thanx for your help. The Issue improved the machine speed. I wouldn't says its where it should be with current specs, but ill continue to work on the issue.
     
  13. CTopher macrumors newbie

    Joined:
    May 3, 2010
    #13
    Have you run a SMART tool to check the HD? It's likely a HD if a new account didn't resolve your issues. And remember OSX does not have any good tools to do this. Suggest getting a app to pull a SMART report and check disk for errors. I recently determined my 2011 1tb drive had hundreds of bad sectors after having huge speed issues. Disk Utils never reported a thing, ran SMART reporter and determine my issue instantly. Purchased the OWC cable to install a after market drive(WD 3tb RED drive) and am up and running.
     
  14. FrogTastic thread starter macrumors regular

    FrogTastic

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    #14
    OK, non of the above have helped.

    Now faced with the iPhoto upgrade loop to top it off!

    :mad:
     
  15. FrogTastic thread starter macrumors regular

    FrogTastic

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    #15
    Spoke to Apple, suggested I do a system file reinstall
     
  16. FrogTastic thread starter macrumors regular

    FrogTastic

    Joined:
    Nov 20, 2008
    Location:
    United Kingdom
    #16
    Afew updates:

    As per :apple: Care I did the following:,

    Reinstalled system files
    Removed all media and 3rd party apps
    Repair permissions

    The above did nothing. iMac was running very hot, hot to the touch in fact and I noticed a burnt on the screen so I booked the iMac in at my local :apple: repair centre.

    Received a call today from :apple: advising I have 40% disk fragmentation, dust built up on the fan which they feel have caused the speed issues. They suggested(after they replace the screen FOC) that I purchase Disk Wizard and run this every few months?

    This for me sounds strange, I thought OS doesn't require defragging and this was done by Mac background housekeeping?

    Does this sound right?
     

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