Malware? TrustedInstaller randomly hogging CPU

Discussion in 'Windows Vista Help' started by Gina Engli, Jun 21, 2012.

  1. Gina Engli

    Gina Engli Guest

    Lately I've been noticing instances of games and other software becoming
    sluggish. ProcessExplorer reveals that in a few of these instances a
    svchost.exe hosting just one service, Windows Defender, is responsible,
    and in the rest it's TrustedInstaller.exe.

    Note: I know it's normal for TrustedInstaller to use CPU when something
    is being installed, particularly via Windows Update. These instances are
    occurring while nothing is being installed -- or else while something is
    being *surreptitiously* installed, hence my concern that it could be

    As for the svchost, I'm given to understand that svchost instances
    shouldn't suddenly start gobbling CPU under any circumstances.

    Does anyone know a) what might be causing these symptoms and b) what to
    do to fix them? I don't want *any* background processes randomly
    grabbing large amounts of processor, and I *certainly* don't want
    anything being installed surreptitiously. (I have long since set WU to
    notify me rather than take any actions automatically -- particularly as
    the one thing I want even less than random slowdowns from things
    grabbing the CPU and hogging the disk controller is randomly-timed
    Gina Engli, Jun 21, 2012
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