Imac is painfully slow

I have a iMac early 2008, 2.66 intel Core 2, with 2 GB RAM. I'm running OS X 10.8.2. I just ordered RAM to get up to 4GB, so this may help but oh my goodness it's slow. Any advice on how to get it to run faster besides shelling out money for a newer one?

You didn't say if you have installed the RAM or not, if you haven't then you should see some performance increase however 4GB is really the bare minimum in most peoples opinion for running Mountain Lion. I'd recommend upgrading to 6 GB (yes your machine will accommodate 6GB) and then also use Activity Monitor to read System Memory and determine how much RAM is being used to see if you have any apps using too much RAM.

Similar Messages

My 6-year-old iMac is painfully slow after I installed Mavericks, despite increasing ram to 4 GB. Any help out there?.

My 6 year old iMac is painfully slow after I installed Mavericks, despite upgrading to 4 GB of Ram. Everything stops and I see the spinning beachball way too frequently. Any suggestions or solutions?

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Click the Clear Display icon in the toolbar. Then try the action that you're having trouble with again. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V).
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.

Imac is painfully slow. Opening up applications takes 2 to 3 minutes. This occured just after a failed attempt at downloading a TV episode on Itunes.

I was downloading a TV episode in Itunes when it froze. The download was not completed. I had to use the emergency shut down processes and then restart my Imac. Everything now takes 2 to 3 minutes to open up. I have access to all my applications,as far as I know, but everything including my internet is painfully slow. Almost like itues is still running in the background or something.

Go to user>Applications>Utilities>Activity Monitor and check to see what applications are using all your memory. You can quit the offending app in Activity Monitor - please let us know what happens,

Internet (wifi) on new 27" iMac is painfully slow!

Just got a new 27" iMac this weekend. The wifi seems to be painfully slow. I've looked through other forums and have reset the DNS to 8.8.8.8, which seems to have helped a little. It's just so disappointing to have this beautiful, new machine be sooo much slower than older computers. All suggestions welcome; thanks!

Not specific to a slow wifi connection, but wifi problems in general seem to crop up a lot on here and unfortunately there doesn't seem to be a 'one fix' solution.
However, sometimes any one of the following might help resolve issues although, unfortunately, not always. In no particular order:
Check wifi security - if it's WEP change it to WPA or WPA2 (preferably, as it's more secure)
Change the wifi channel on the router
Create a new Network Location: http://support.apple.com/kb/HT5289
Reboot the router
Also take a look at this link and the links within the article for other ideas. They mainly reference Lion, but still seem to be relevant to Mountain Lion:
http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/?utm_source=feed burner&utm_medium=feed&utm_campaign=Feed%3A+osxdaily+%28OS+X+Daily%29&utm_conte n t=FaceBook
...and this link:
http://osxdaily.com/2012/11/30/resolving-stubborn-wi-fi-connection-problems-in-m ac-os-x/

How can I remove Lion? Since the upgrade, my 2011 iMac is painfully slow :(

Any help is sincerely appreciated. My iMac is my primary computer at work and is slowing me down. It ran Snow Leopard beautifully, but it just can't handle Lion. It's a 2011 27 inch model.
Cheers
Jeremy

I updated last week and have had severely degraded performance ever since. It takes around 15 seconds to load launch pad, then even longer for the app icons to appear. If iTunes is playing, playback stutters constantly and it takes a long time for the next song to come on. It's a new machine so there's not much to index, I only have 1 folder with some photoshop files and an iTunes music folder. The only non-standard software I have is Microsoft Office 2008 and Adobe Photoshop CS5.

IMac isrunning painfully slow....

I have repaired permissions, run Disk Warrior, resest cache etc. I am curious about the Memory section of the Activity Monitor. I do not know how to interpret it but hope someone can tell me if this screen shot suggests any explanation? If so, is there any way to improve the speed without purchasing more memory?
The picture was taken with only safari running. I have not had troubles until the last month or so and don't feel like I have changed my usage - did upgrade to Mavericks....
Thanks in advance!
Karen
Mavericks - 10.9.2

DO NOT buy RAM from Best Buy. I woudl recommend using OWC (www.macsales.com) or Crucial. Of the two I prefer OWC. Here is a link to the video I spoke of, you will note this is from OWC. Your machien can accomodate up to 6GB, I would recommend upgrading it to 6GB.
http://eshop.macsales.com/installvideos/imac_mid_2007/
The link to the 6GB upgrade kit is:
http://eshop.macsales.com/item/Other%20World%20Computing/6400DDR2S6GP/

HT1338 Hi, I have a 2.8Ghz i5 27" imac that after Mountain Lion upgrade is now painfully slow (currently memory 4g) any suggestions please

Hi, I have a 2.8Ghz i5 27" imac that after Mountain Lion upgrade is now painfully slow (currently memory 4g) with all latest updates etc...
any suggestions please, thanks

http://www.reedcorner.net/mpg/

I upgraded my imac to Mountain Lion and my iMac has been painfully slow ever since. Any ideas what might be wrong and how to fix it?

I upgraded my iMac to Mountain Lion and it has been painfully slow ever since. Any ideas on what might be happening and how to fix it?

First, back up all data immediately, as your boot drive might be failing.
There are a few other possible causes of generalized slow performance that you can rule out easily.
If you have many image or video files on the Desktop with preview icons, move them to another folder.
If applicable, uncheck all boxes in the iCloud preference pane.
Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
Otherwise, take the steps below when you notice the slowdown.
Step 1
Launch the Activity Monitor application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Activity Monitor in the icon grid.
Select the CPU tab of the Activity Monitor window.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Next, select the Disk Activity tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in and Writes out.)
Step 2
If you have more than one user account, you must be logged in as an administrator to carry out this step.
Launch the Console application in the same way you launched Activity Monitor. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Select the 50 or so most recent entries in the log. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). You're looking for entries at the end of the log, not at the beginning.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some personal information, such as your name, may appear in the log. Anonymize before posting. That should be easy to do if your extract is not too long.

Why is my iMac running so slow and crashing all the time?

My iMac is last years model, running on Lion OS X. It's one year old, I had it Christmas 2011. It's 1TB with 4GB RAM. It's partitioned with Bootcamp, Windows 7, so it's 100GB Win7 and 900GB OS X. I'm only using 350GB of RAM altogether.
It's started running ridiuclously slow. Firstly, it was just when I started to work with large files in Photoshop (CS5.1). I was attempting to work on a piece for college which size is A2 (594 x 420), but it was painfully slow, so I literally stopped working and started researching into how to improve performance. I deleted a lot of software that I didn't need, verified and repaired discs, nothing seemed to work.
Now Photoshop isn't the only problem. Certain websites aren't loading when they're working fine on my iPhone and on my iMac, such as Facebook, Google, but websites like Twitter and Gmail are working? I downloaded Avast and started to scan for a virus, but then the deadly annoying pop up saying "You need to restart you Mac, hold down the power button etc" popped up... I dunno what I'm supposed to do now, and I dunno why it's acting like this. It's been fine. Think it's a virus? I'm scanning now but nothing found as of yet.
If anybody knows what's going on, or if this has happened to them, please let me know! I know I could just book a Genius appointment and take it to the Apple store, but I have university interviews in a couple of days, no external hard drives to put my work on, and it's 27" which is hard to lug around town...
Thank-you.

If you have more than one user account, you must be logged in as an administrator to carry out these instructions.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Select the most recent panic log under System Diagnostic Reports. Post the entire contents — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post shutdownStall, spin, or hang reports.

IMac running very slow

Good Friday to you all.
I am struggling to figure out why my computer is running so painfully slow. All applications even safari. I have a word document open and safari running. I can hear the system running in the background all the time. Like it is working on something all the time.
Info from version is Snow leopard 10.6.8
Capacity: 250 GB, Available 72 GB.
That is all I know to look for. I have used clean my MAC to scan for excess files etc. but that is about all I know to look for.
Any tips would be helpful.
My next idea was to buy a external hard drive to off load some big files, like movies and pictures to give me more space.
But this should have anything to do with how slow safari is running ?
Thank you,
Karen
ALmonte , Ontario Canada

Since this problem started, have you restarted the iMac?
Mac OS X uses hidden files called swap files for its virtual memory scheme. If you are logged in for a long time (like a week or more), those files can get fragmented, making basic operations less efficient. So if things start to feel sluggish or you see odd behavior, the first thing you should do is restart.
This can also happen (or happen more quickly) if you are running low on free space on your startup volume. Once you get below about 15% free, the remaining free space will get more fragmented, and Mac OS X will not be able to operate as efficiently. So if you are running low on free space, get an external drive and copy off some of your data to free up space on your startup volume.
Another thing you should do periodically is run Disk Utility and use the +Repair Disk Permissions+ routine (on +First Aid+ tab) on your startup volume. I do it immediately before running Software Update to install an update.

Painfully slow startup - any suggestions how to make it faster?

Hi Everyone,
Just thought I'd ask people - my 17" iMac G5 1.9GHz PowerPC with 512MB ram is painfully slow at start-up. Seems to take forever! Does anyone know how I could clear a lot of rubbish from my computer and someone make it faster.
Would anyone recommend a complete re-install - would that improve speed?
Any help appreciated, cheers,
Mark

Mark, you can clear space on your drive and speed it up by moving a lot of sound and video files to a DVD, or even better, to an external; Firewire drive that you can partition and also use as a clone boot disk.
Go through your applications folder and look for stuff that you never use, then get AppZapper to remove all traces of them. You can also use Monolingual to remove the tons of extra languages installed with Word and OS X, just make sure you uncheck English and any other language you might use.
Hope some of this helps,
Miriam

IMac very, very slow

Since the update before last (I am now on 10.10.1) this iMac has been running painfully slow. It takes around a minute to swap users. Swapping windows often brings up the spinning beachball, as does typing text in a window. It's pretty much unusable, unless you get lucky and are within an app that is behaving itself. It's a pretty vanilla iMac, that's not particularly old (2011) or had heavy use. Before anyone says anything - rebooting doesn't help. It's nothing to do with system activity, zombie processes or lack of RAM. Here's the Etrecheck summary -
Problem description:
Mac has been running painfully slow for quite a while - not just since last OS update. I seem to spend most of the time staring at the spinning beach ball.
EtreCheck version: 2.1.8 (121)
Report generated 8 February 2015 15:44:45 GMT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    iMac (27-inch, Mid 2011) (Technical Specifications)
    iMac - model: iMac12,2
    1 2.7 GHz Intel Core i5 CPU: 4-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 0/DIMM1
            Empty
        BANK 1/DIMM1
            Empty
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
    AMD Radeon HD 6770M - VRAM: 512 MB
        iMac 2560 x 1440
System Software: ℹ️
    OS X 10.10.1 (14B25) - Time since boot: 33 days 23:49:34
Disk Information: ℹ️
    ST31000528AS disk0 : (1 TB)
        EFI (disk0s1) <not mounted> : 210 MB
        Macintosh HD (disk0s2) / : 999.35 GB (865.10 GB free)
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
    HL-DT-STDVDRW GA32N
USB Information: ℹ️
    Logitech Logitech USB Optical Mouse
    Apple Internal Memory Card Reader
    Apple Computer, Inc. IR Receiver
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /Library/Extensions
    [loaded]    com.logmein.hamachi (1.0.0 - SDK 10.9) [Click for support]
        /System/Library/Extensions
    [not loaded]    com.echofx.videoglide.kext (1.0.0) [Click for support]
        /System/Library/Extensions/VideoGlide.kext/Contents/PlugIns
    [not loaded]    com.echofx.videoglide.kext.audio (1.0.0) [Click for support]
    [not loaded]    com.echofx.videoglide.kext.noseize.appleusbaudio (1.0.0) [Click for support]
    [not loaded]    com.echofx.videoglide.kext.noseize.classic (1.0.0) [Click for support]
Startup Items: ℹ️
    VideoGlide Startup: Path: /Library/StartupItems/VideoGlide Startup
    Startup items are obsolete in OS X Yosemite
Problem System Launch Agents: ℹ️
    [killed]    com.apple.CallHistoryPluginHelper.plist
    [killed]    com.apple.CallHistorySyncHelper.plist
    [killed]    com.apple.cloudd.plist
    [killed]    com.apple.cmfsyncagent.plist
    [killed]    com.apple.coreservices.appleid.authentication.plist
    [killed]    com.apple.EscrowSecurityAlert.plist
    [killed]    com.apple.icloud.fmfd.plist
    [killed]    com.apple.printtool.agent.plist
    [killed]    com.apple.recentsd.plist
    [killed]    com.apple.sbd.plist
    [killed]    com.apple.scopedbookmarkagent.xpc.plist
    [killed]    com.apple.security.cloudkeychainproxy.plist
    [killed]    com.apple.spindump_agent.plist
    [killed]    com.apple.telephonyutilities.callservicesd.plist
    [killed]    com.apple.warmd_agent.plist
    15 processes killed due to memory pressure
Problem System Launch Daemons: ℹ️
    [killed]    com.apple.AssetCacheLocatorService.plist
    [killed]    com.apple.awdd.plist
    [killed]    com.apple.ctkd.plist
    [killed]    com.apple.emond.aslmanager.plist
    [killed]    com.apple.ifdreader.plist
    [killed]    com.apple.nehelper.plist
    [killed]    com.apple.periodic-daily.plist
    [killed]    com.apple.periodic-monthly.plist
    [killed]    com.apple.periodic-weekly.plist
    [failed]    com.apple.sessionlogoutd.plist [Click for details]
    [killed]    com.apple.softwareupdate_download_service.plist
    [killed]    com.apple.wdhelper.plist
    11 processes killed due to memory pressure
Launch Agents: ℹ️
    [loaded]    com.google.keystone.agent.plist [Click for support]
    [running]    com.logmein.hamachimb.plist [Click for support]
    [running]    com.trusteer.rapport.rapportd.plist [Click for support]
Launch Daemons: ℹ️
    [loaded]    com.adobe.fpsaud.plist [Click for support]
    [loaded]    com.google.keystone.daemon.plist [Click for support]
    [running]    com.logmein.hamachi.plist [Click for support]
    [running]    com.trusteer.rooks.rooksd.plist [Click for support]
User Launch Agents: ℹ️
    [failed]    com.apple.CSConfigDotMacCert-[...]@me.com-SharedServices.Agent.plist
    [running]    com.spotify.webhelper.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    Application Hidden (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    Dropbox    Application (/Applications/Dropbox.app)
Internet Plug-ins: ℹ️
    Unity Web Player: Version: UnityPlayer version 4.3.5f1 - SDK 10.6 [Click for support]
    FlashPlayer-10.6: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    Flash Player: Version: 16.0.0.305 - SDK 10.6 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    o1dbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
    googletalkbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
    Silverlight: Version: 5.1.20513.0 - SDK 10.6 [Click for support]
    DirectorShockwave: Version: 11.6.4r634 [Click for support]
    JavaAppletPlugin: Version: 15.0.0 - SDK 10.10 Check version
User internet Plug-ins: ℹ️
    Google Earth Web Plug-in: Version: 7.1 [Click for support]
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
    Trusteer Endpoint Protection [Click for support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
         4%    WindowServer
         1%    sysmond
         1%    taskgated
         1%    SubmitDiagInfo
         0%    Final Draft
Top Processes by Memory: ℹ️
    112 MB    Safari
    107 MB    Finder
    69 MB    WindowServer
    47 MB    iPhoto
    43 MB    mds
Virtual Memory Information: ℹ️
    56 MB    Free RAM
    1.00 GB    Active RAM
    938 MB    Inactive RAM
    1.05 GB    Wired RAM
    128.56 GB    Page-ins
    3.10 GB    Page-outs
Diagnostics Information: ℹ️
    Feb 8, 2015, 12:34:33 PM    /Library/Logs/DiagnosticReports/LogMeIn Hamachi Menubar_2015-02-08-123433_[redacted].crash

Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Click the Clear Display icon in the toolbar. Then take an action that isn't working the way you expect. Select any messages that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name or email address, may appear in the log. Anonymize before posting.

Pages 4.1 is so painfully slow

Pages '09 4.1 is so painfully slow - it takes over my entire computer and everything just drags.... I need this app for my business but I don't know what to do. I am mostly touching up photographs using the Alpha Mask. I absolutely cannot have iPhoto and Pages open at the same time. I end up having to shut everything down in order for it to work. I am in version Mac OSX 10.7.2

2 Gb is not much, 4gb is much more comfortable and best to max it out for your model, RAM is cheap.
Lion is more demanding and slower than Snow Leopard.
It sounds like you have an iMac 20" early 2008. Installation is very easy:
http://support.apple.com/kb/HT1423#2
Apple reports that you can add up to 4Gb (2x2) of RAM but you can go to 6Gb.
You need 2GB + 4GB Kit DDR2 SODIMM PC2-6400 800Mhz Unbuffered Non ECC
Make sure you tell the supplier it is for the Mac, which is quite picky.
Double check I have identified your Mac correctly:
Menu > Apple > About this Mac > More Info… > Hardware > Model Identifier: iMac 8,1
Peter

Accessing Windows file share painfully slow in OS X 10.8

Hello!
I work with a company that has one Mac in the network - an iMac 12,2 running OS X 10.8.4. The computer's user needs to work off of the server quite frequently - it's a Windows Server 2008 R2 server - particularly with shared files. Problem is, when she goes to access the shared drives through the Finder, it is painfully slow. It often takes 5-10 seconds just for a directory listing to show, and opening and manipulating files takes significantly longer. I've tried a number of things to try to speed things up, most recently indexing the network drives she uses and installing a Thunderbolt Ethernet Adapter to use instead of the regular wired network card. That hasn't helped though. Has anyone else run into this problem, and if so, how were you able to fix it?
Thanks in advance!

Hello!
I work with a company that has one Mac in the network - an iMac 12,2 running OS X 10.8.4. The computer's user needs to work off of the server quite frequently - it's a Windows Server 2008 R2 server - particularly with shared files. Problem is, when she goes to access the shared drives through the Finder, it is painfully slow. It often takes 5-10 seconds just for a directory listing to show, and opening and manipulating files takes significantly longer. I've tried a number of things to try to speed things up, most recently indexing the network drives she uses and installing a Thunderbolt Ethernet Adapter to use instead of the regular wired network card. That hasn't helped though. Has anyone else run into this problem, and if so, how were you able to fix it?
Thanks in advance!

Mid 2011 Macbook Air Painfully slow.

Mid 2011 Macbook Air Painfully slow.
Hey everyone. I am writing about my 13 inch Mid 2011 Macbook Air.
Recently it has been extremely slow and on occasion has not started up.
I have reset the PRAM and SMC already, yet it is still very slow. I have a couple theories about what might have caused it, are they plausible?
Theory 1: It’s a software problem. I tried to upgrade to 10.8.2 but halfway through the upgrade the computer restarted and somehow I was still on 10.8.1. For fear of a big issue happening I didn’t try to upgrade again. Perhaps it is a flaw in Apple’s software update?
The important thing to note about this update is that I tried to install 10.8.2 around a month or two weeks BEFORE I started having problems. So if these issues were due to 10.8.2’s failed update then it certainly was a delayed reaction.
I would of course like to update to 10.8.2 BUT as my computer is acting EXTREMELY slow and having trouble turning on occasionally I am worried the software update will completely brick the machine. Is that possible? Should I actually finish through with the software update?
Theory 2: It was an electricity problem.
The computer died when I was sitting at a café plugged into their wall sockets. A few days later when I came back to the same spot with my old macbook which is now being used in lieu of the Air it suddenly turned black for a little while. Sensing it might be an electricity surge or something with their system I unplugged the cable. I am not sure if that was paranoia though.
Can an electricity surge or a bad outlet fry a computer? Can it fry the ram so the computer is extremely slow? Does that theory hold any water?
Thanks for your help diagnosing this problem.
All the best.

Please read this whole message before doing anything.
This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac.
These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing.
Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects.
Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then either copy or drag it. The headings “Step 1” and so on are not part of the commands.
Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Step 1
Copy or drag — do not type — the line below into the Terminal window, then press return:
kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}'
Post the lines of output (if any) that appear below what you just entered (the text, please, not a screenshot.) You can omit the final line ending in “$”.
Step 2
Repeat with this line:
sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|edu\.mit|org\.(amavis|apache|cups|isc|ntp|postfix|x)/{print $3}'
This time, you'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning not to screw up. You don't need to post the warning.
Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step.
Step 3
launchctl list | sed 1d | awk '!/0x|com\.apple|edu\.mit|org\.(x|openbsd)/{print $3}'
Step 4
ls -1A /e*/mach* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts 2> /dev/null
Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting.
Step 5
osascript -e 'tell application "System Events" to get name of every login item' 2> /dev/null
Remember, steps 1-5 are all drag-and-drop or copy-and-paste, whichever you prefer — no typing, except your password. Also remember to post the output.
You can then quit Terminal.

Imac is painfully slow

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