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Mac OS X "performance" update prevents hard-drive stalls

updated 06:10 pm EDT, Wed October 14, 2009

Downloads available for Leopard and Snow Leopard

Apple on Wednesday released performance updates for both its Leopard and Snow Leopard operating systems. The downloads address intermittent stalls caused by hard drives, an issue reported by a a small number of users. The updates do not appear to include any other bug fixes.

Affected systems include MacBook Airs, 13- to 17-inch MacBook Pros, 13-inch MacBooks, iMacs and Mac minis. The Snow Leopard download weighs in around 300KB, while the Leopard update is contained in a 322KB file. [Snow Leopard - download] [Leopard - download]

by MacNN Staff



  1. Makosuke

    Joined: Dec 1969


    FIngers Crossed

    Ooh, I can't wait to get home and try this. My MBP (since I got it) has a drive that keeps "nodding off" and parking briefly during regular use, which is annoying. Alternately the external drive attached to my mini server has been suffering from narcolepsy, falling asleep and spinning back up in the middle of relatively heavy data transfer from the network, which is maddening.

    That said, I'm not optimistic that this update will help either. Hope springs eternal, though.

  1. Mrjinglesusa

    Joined: Dec 1969


    Sweet fancy Moses!!!

    So THAT'S what has been wrong with my iMac!!!!! I have been trying to figure out why, for no reason at all, my iMac will stall (slow response from mouse, can't click anything, etc.) at random times. It appears this is why. Off to DL now....

  1. Mrjinglesusa

    Joined: Dec 1969


    Scratch that....

    Apparently I have something else going on. My iMac isn't eligible for the update (Late 2008 20"). :(

  1. rovissi

    Joined: Dec 1969



    One o of my MacBook's (C2Duo late 2006) have this problem, and is not eligible to this update... anyone know where is the origin of this problem ?

  1. stainboy

    Joined: Dec 1969


    hope it works...

    it's been maddening when i'm trying to work and have to wait and wait for my drive to spin up, even when i'm not doing anything that requires drive access.

  1. JeffHarris

    Joined: Dec 1969


    It worked for me...

    My girlfriend bought a new 13" MacBook Pro in August and recently she started complaining about weird behavior. The thing would start running extremely slowly or just stop for several seconds at a time. I figured she needs to upgrade the RAM to 4GB or I'd just run Disk Warrior and everything would be fine.

    I was trying to install ClickToFlash (GET IT!), thinking that maybe Flash sites were choking Safari... and the thing kept stalling. It was ridiculous.

    Downloaded and installed the Leopard Performance update and it started working as it should.
    Strange. I'd love to find out what the problem really is/was.

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