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Anti-Virus for Mac makes computer hang and run very slowly

Am running Snow Leopard on an old iMac.  Since installation of AntiVirus there have been numous periods where my Mac has run very, very slowly or hung.  Checking the Activity Monitor showed Sophos absorbing most of the cycles, and when Sophos was disabled things speeded back up to normal.  How to deal with this?

-Latigo-

:1007307


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  • What else was happening during those periods?  Were there backups running, torrents torrenting, large Java-based apps running?

    Slowdown is usually associated with a large number of files being opened for access at the same time.

    Does disabling archive scanning for on-access scans speed things up for you?

    :1007573
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  • What else was happening during those periods?  Were there backups running, torrents torrenting, large Java-based apps running?

    Slowdown is usually associated with a large number of files being opened for access at the same time.

    Does disabling archive scanning for on-access scans speed things up for you?

    :1007573
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