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My iMac has suddenly become very slow when making any selection of applications, websites and even typing this question. A rotating circle appears before selection is acquired.

Posted on Feb 25, 2022 2:47 AM

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Question marked as Top-ranking reply

Posted on Feb 25, 2022 3:50 AM

Hi blackbird52


Try a Safe-Mode boot first which will carry out a basic file system check and clear various system caches that may have become bloated or corrupted.


A Safe-Mode boot is slow and your keyboard and mouse commands will appear "laggy', this is normal.


There is no need to do anything in Safe-Mode other than allow the Mac to boot in Safe-Mode to your user desktop, leave the Mac alone for ten minutes while background boot-up tasks complete and then restart the Mac.


Upon restarting the Mac will be back in Normal-Mode and should respond to mouse and keyboard again at normal speeds.


Beyond the above, do you have any third-party Anti-Virus or "cleaning" applications running, some of these are known to interfere with normal operations of a Mac. If this applies try disabling/removing these and test again.


This linked document describes how to use Safe-Mode:


How to use safe mode on your Mac – Apple Support (UK)


HTH.


Will.

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Question marked as Top-ranking reply

Feb 25, 2022 3:50 AM in response to blackbird52

Hi blackbird52


Try a Safe-Mode boot first which will carry out a basic file system check and clear various system caches that may have become bloated or corrupted.


A Safe-Mode boot is slow and your keyboard and mouse commands will appear "laggy', this is normal.


There is no need to do anything in Safe-Mode other than allow the Mac to boot in Safe-Mode to your user desktop, leave the Mac alone for ten minutes while background boot-up tasks complete and then restart the Mac.


Upon restarting the Mac will be back in Normal-Mode and should respond to mouse and keyboard again at normal speeds.


Beyond the above, do you have any third-party Anti-Virus or "cleaning" applications running, some of these are known to interfere with normal operations of a Mac. If this applies try disabling/removing these and test again.


This linked document describes how to use Safe-Mode:


How to use safe mode on your Mac – Apple Support (UK)


HTH.


Will.

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Feb 27, 2022 8:56 AM in response to Will_G_Astro

Thank you Will, I have tried your suggestion and have seen a marked improvement.


I remain suspicious though about a very recent announcement from my provider regarding a necessary change in the anti-virus software provided by them. They are changing the supplied security package from McAfee to Norton so that may be a root, or contributing factor to my problem.


I'll let you know. Thanks again for helping.


Regards


Blackbird52

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