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Alerts from Norton re high memory usage by plugin-container.exe


Running Firefox 3.6.13 on Windows XP Pro Service Pack 3. The details from Norton are as follows:

1. Program Path C:\program files\Mozilla firefox\plugin-container.exe 2. Program Description - Plugin Container for Firefox 3. Memory - 1,676 MB used 4. Disk Write Activity - 10 MB (total for this process) 5. File Origin - Source File = updater.exe, File Created: firefox.exe,updater.exe,plugin-container.exe

Additional System Details

Installed Plug-ins

  • Garmin Communicator Plug-In
  • np-mswmp
  • 1.7.0059.1
  • Adobe PDF Plug-In For Firefox and Netscape "9.4.1"
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Default Plug-in
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 10.1 r102
  • Garmin Communicator Plug-In
  • GEPlugin
  • Next Generation Java Plug-in 1.6.0_23 for Mozilla browsers
  • 4.0.51204.0
  • Google Update
  • Npdsplay dll
  • DRM Store Netscape Plugin
  • DRM Netscape Network Object


  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv: Gecko/20101203 Firefox/3.6.13 ( .NET CLR 3.5.30729; .NET4.0C)

More Information

Firefox with multiple tabs open checking the various forums I subscribe to. Everything slows to a virtual stop and it becomes necessary to re-boot as system is unusable. The file was downloaded on 12/12/2010 but has only caused problems the last two days.

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622 solutions 8037 answers

Probably the alerts are nothing to worry about, and you may wish to suppress that particular alert.

On a couple of old spec legacy machines I recently switched. 
Partly because of economics, and partly because , of the two,
Norton can perform better (in my opinion) on legacy machines.

The first thing I did notice was that Norton does pulse updates and background tasks very frequently (configurations can be changed) by default, and flags up quite a number of alerts.

The Norton (NIS) 'Insight' facility will be flagging up firefox plugin container.exe. It can be configured to suppress the alerts from firefox plugin container, but unless disabled will probably just flag up another busy process or application. It is not flagging it up because it is a known security problem, merely because of the amount of activity.

I imagine the alerts are when you are playing videos, probably with FlashPlayer, and may well depend on the resolution/quality of the videos. If you think the results are unusual or unexpected see:

PS not sure what is happening with this post are some phrases unacceptable eg alternative expressions about economics; one paragraph was behaving oddly in preview resorted to manually adding break tags to keep it within the container.