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imac rapidly losing memory

  1. M

    Losing Memory rapidly while doing nothing

    Hello, Yosemite 10.10.5 21.5" MID 2010 imac 12GB RAM I noticed my imac is rapidly losing system memory at a rapid pace. I'm seeing my available memory in the finder menu drop in increments of 500 MB while doing nothing. I don't have time machine on, not connected to the internet, and I have no...