Why has my iMac suddenly become very slow in waking up

Have not installed any new software recently but have just changed my ISP, suddenly my iMac takes nearly a minute to 'wake up' Mountain Lion installed when it first became available and it was fine after that. When it does wake up it is fine, not slow, and opens apps just as quick as before.
Message was edited by: brijanhub

Hi:
As I said, there are literally thousands of messages - most relate to specific configurations.
When those messages appear, does quite a bit of time elapse?
I Googled "ACE." The only possibly relevant thing I could find is a description of Cisco networking software....
http://www.cisco.com/en/US/prod/collateral/modules/ps2706/ps6906/White_Paper_Con nection_Handling_within_the_Cisco_Application_Control_Engine_Module_Hardware_ps7 027_Products_White_Paper.html
Barry

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Why has my iMac started running very slow?

In the last week my imac has started running extremely slow especially in safari. Nothing I know of has changed.why?

Besides what Allan is asking, make sure your drive isn't failing. Get the free demo of Smart Utiity to check its health.
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Why has my ipad suddenly become ridiculously slow?

I only have about 8 apps, no music, pics or video. I double checked and still have about 80% free disc space. This change in speed happened suddenly. I have tried resetting by holding the two buttons for several seconds until the apple appears. That seems to sometimes fix the slowness for a few minutes, but then the problem starts again.

Have you checked to see what apps are in the background? Double click the home button and you will see a line of apps. Some are not running and there for quick reopen, some are sleeping, some are running in the background and using resources. To clear, hold one of them until they all start to wiggle and have a minus in a red circle. Tap each minus and that app will disappear. Remove all of them and see what your performance is.
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My iMac has suddenly become very slow to wake from "sleep." Why? How can I fix this?

My iMac has suddenly become very slow to wake from "sleep." How do I fix this and what is causing the problem? Even the mouse wakes very slowly.

Try these basic troubleshooting steps.
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IMac has suddenly become very slow doing everything?

My iMac has suddenly become very slow -at present it is useless and will have to take to apple unless you can help.?

First, make sure you have adequate backups. If your hard disk is failing this could be a sign. It can be replaced if necessary, but a backup strategy is recommended whether or not you are experiencing problems.
Read: OS X Mountain Lion: If your Mac runs slowly. It applies to Lion as well. The article is very cursory, but be sure to read through to the end. Unfortunately the link there is broken, so use this one: Disk Utility. To do this you must start your Mac from the Recovery System or Internet Recovery.
Rather than ask a dozen questions for more details about your system consider the following. You must be running either Lion or Mountain Lion. Including your version of OS X in your system description would help.
Apple Support Communities contributor etresoft wrote a very useful app to quickly gather certain system information that may help point to a cause of this problem. Go to his website, download and run EtreCheck:
http://www.etresoft.com/etrecheck
Etrecheck will take a moment to run as it collects its data.
Copy and paste its output in a reply. Do not be concerned about anything that says "Problem" or "failed".
EtreCheck was designed to remove any personal information (such as your computer's name and serial numbers) but if you see anything that looks like an email address or any other personal information that should not be divulged to others, please delete or obscure that information when you post the reply.
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My Macbook Pro purchased Dec 2011 has suddenly become very slow after not using for 2 weeks (close to frozen). What is the problem and how to solve it?

My Macbook Pro purchased Dec 2011 has suddenly become very slow after not using for 2 weeks (close to frozen). What is the problem and how to solve it?

Need Help Ye,
boot your MacBook Pro into Recovery mode by holding down a Command key and the R key as it starts up. Once the Mac OS X Utilities menu appears, select Disk Utility. On the left-hand side of the Disk Utility window, select your internal disk’s boot partition (typically called “Macintosh HD”). On the right-hand side, press the Verify Disk button if it’s not greyed out; if it is greyed out, or if it reports that errors were found, press the Repair Disk button. Once the verification/repair is completed, exit Disk Utility and select Restart from the Apple menu to restart in normal mode. Is it still very slow?

Aperture suddenly becomes very slow opening library

Hi.
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I'm surprised nobody has responded to this yet. Hopefully you have already figured it out, but if you double click on the aperture library while holding down the option and command keys, Aperture will bring up a dialog that gives you three options for dealing with potential library issues: repair permissions, repair the library or rebuild the library. You should try them in that order, and it is a good idea to back up your library first (especially before rebuilding the library).
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Please don't indiscriminately dump thousands of lines from the log into this discussion.
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My imac its become very slow

hi
my imac it become very slow

Hi:
As I said, there are literally thousands of messages - most relate to specific configurations.
When those messages appear, does quite a bit of time elapse?
I Googled "ACE." The only possibly relevant thing I could find is a description of Cisco networking software....
http://www.cisco.com/en/US/prod/collateral/modules/ps2706/ps6906/White_Paper_Con nection_Handling_within_the_Cisco_Application_Control_Engine_Module_Hardware_ps7 027_Products_White_Paper.html
Barry

Hello My macbook pro has suddenly become very slow,any solution?

I had no problems with my Macbook pro, since yesterday it became very slow ,i tried to close and remove many pages as possible,tried to update ,but still slow.
Any thing else to do?

Hey Tafaya,
Thanks for the question. I understand that you are experiencing performance issues with your MacBook Pro. The following resource may provide a solution, while it is titled for OS X Mavericks - the same steps apply for Yosemite:
OS X Mavericks: If your Mac runs slowly
http://support.apple.com/kb/PH13895
Thanks,
Matt M.

My iMac suddenly runs very slow and freezes frequently. Ideas?

My iMac has started running very, very slow and then suddenly freezes and we have to reboot. I have no idea how to fix that....

Charly,
That's not much info to go on. Sorry you are having a problem.....
I can suggest a couple of things....
Go to "Applications>Utilities>DiskUtility"
..... run "First Aid" as shown in red boxes below....
This just might help... at least it is a start.....
I routinely use a little clean/maintenance utility called "OnyX" it performs lots of good house keeping stuff...
If this dosen't help you are going to have to ask someone smarter that I am......Again, it is a starting point at least.........
Good luck......

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My iMac suddenly became very slow

Hi everybody, I have seen some previous posts about more or less the same subject, nevertheless I ask for help because I am not sure I can try to apply some suggestions to my case.
Well, I own a late 2007 20" Intel iMac (Intel Core 2 Duo), with 4Gb RAM and the default 320 Gb hard disk. It has been regularly upgraded, operating system-wise, and now it runs with Mountain Lion (intalled from scratch).
I don't do so much work with the iMac, the most used applications being Safari and Chrome for internet surfing, and Thunderbird for the email. I also use iPhoto for pictures loading and storing.
It happened very seldom so far that the computer hung during the startup (remaining in the grey screen), requesting a strong power off action.
A couple of days ago a sudden electrical power shutdown during a thunderstorm acted on the iMac, too.
Yesterday the iMac started sporting the rolling beach ball most of the time. Even if there only the Finder working, the ball appears and stays there.
I started the iMac from the restore partition, launching the "verify disk" and "verify permissions" tasks via Disk Utility on the internal HD: the result was "disk OK" and a very few repaired permissions. But then the problem rose again.
It is very hard, in such condition, to try to execute utilities like Onyx or system funcions like Spotlight, or even launch the Activities Monitor. What I can say is neither the CPU nor the memory seemed to be heavily affected by the computer activity.
I could to a last Time Machine backup, so no data was lost so far, but since yesterday evening the ball is rolling and nothing happend to the computer.
Please note that while I was trying to find out what the problem could be, it also happened that the screen started switching alternatively from the desktop background picture to the startup grey screen. Then is stopped blinking this way.
I sincerely don't know how I can try to better find out what the problem could be. Any suggestions? I tried to be as detailed as possibile, but if more information is needed, I am ready to supply it.
Thank you very much in advance to everybody.
Giovanni

I whall try with the operations you sugget.
In the meantime the iMac apparentely started working fine again .
I was able to run the hardware test using the program provided with the original iMac DVD's, and it reported the following error:
4MOT/1/40000003:HDD
From what I could see on the Internet, it should be related to the HDD fan not workinf properly and therefore having the HDD temperature rise, but someone also states it could be the RAM memory.
I'll try to check it more tonight.

Why has my Mac mini become so slow?

I realise this sounds like the oldest newbie question in the book, and could be down to any of a hundred things, but I'll try and explain as clearly as possible. (I've been using Windows for 15+ years, Macs for the last 2+, and I always associated Windows with this kind of gradually increasing lethargy.)
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What sort of operations? Well, dropping down a menu, for example. Or changing volume. (Using the keyboard or Apple remote.) Or switching between open apps. It's not unusual for me to wait over 10 seconds for the computer to respond, for something as simple as a volume change. If I repeat it, it's instant. But if I wait a few minutes, or switch to a different app, the lag's there again.
The mini is 2 years old. It's a 1.83GHz Intel Core Duo with 512MB RAM, with wireless keyboard and mouse. About 2 months ago, I upgraded from Tiger to Leopard, using the Archive & Erase method. It's permanently connected to an external 1TB firewire drive. I have MenuMeters installed, which rarely shows over 10% usage per CPU, including during the slowdowns. (If I'm ripping a DVD with Handbrake, it goes to 100%, so I'm not surprised if it's slightly unresponsive then.) In trying to speed things up, I've set MenuMeters to only display CPU, updating every 3 seconds, but it hasn't made a difference. I don't have a lot else installed on the mini -- it's mainly a media player. During a typical day it runs Firefox, Quicktime with Perian, DVD Player, Front Row, and iTunes. (iTunes is so sluggish I avoid using it when I can.) The only memory resident apps are Vine Server and Audioscrobbler.
Does this sound familiar? Any suggestions? I'll supply a System Profile file if that'll help.
francois

Unlike most Windows PCs, Macs have always seemed to be a little fussy about RAM, so in the broadest sense, the answer to your question whether you can use any brand of RAM (compatible specs of course), is that no, you can't. Nor is it always possible to say what brands are suitable and which are not. Better, really, to buy RAM for Macs from suppliers who have a history of Mac support (thus are aware of compatibility issues) and who offer a lifetime, no quibble, warranty, such that if the RAM doesn't work, or fails in service later, it can be swapped out without any hassle or additional cost. Crucial.com (the link I provided previously) is one such.
As far as fitting it, it is always better to have an approved service provider do it in that if there are any problems, they can be held accountable, and if there is any warranty cover, they will not risk voiding it. Each will charge a different amount for this kind of work however, so it's worth shopping around for prices for upgrading RAM - including the cost of the service provider also providing the RAM, since some can source compatible modules at wholesale.

Why has my iMac suddenly become very slow in waking up

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