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Why is Firefox running in the Background even after I close the browser completely ? it even consumes 35-55k memory un-necessarily. why is it so? it does not happen with other browsers. Please look into this ASAP. reply at naudurivsm@gmail.com


I have been observing this for quite some time now. In fact ever since I upgraded to Firefox 3.6.X versions. After I close the Firefox browser completely and after some time (any time before I totally shut down my PC ), I try to open Firefox browser, then I get an error message saying Firefox is already running in the background". Then I go and check the processes using Task manager and I am surprised to Firefox running in the back ground utilizing memory to the range of 35 -62k ( as I observed) . I am not sure why would a browser be running after I close/ exit out of it completely ?

Additional System Details

This happened

Every time Firefox opened

This started when...

after I close firefox and re-open /launch after some time.

Installed Plug-ins

  • 2,5,3,1
  • npmnqmp 989898989877
  • Version
  • Google Talk Plugin Video Accelerator version:
  • Office Plugin for Netscape Navigator
  • np-mswmp
  • Adobe Shockwave for Director Netscape plug-in, version 11.0
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • npdivxplayerplugin
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • ActiveTouch General Plugin Container Version 103
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape "9.3.3"
  • Default Plug-in
  • Google Update
  • Shockwave Flash 10.1 r53
  • DivX Web Player version
  • GEPlugin
  • Yahoo Application State Plugin version
  • 4.0.50524.0
  • Office Live Update v1.5
  • Virtual Earth 3D 4.00090316005 plugin for Mozilla
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • Google Updater pluginhttp://pack.google.com/
  • RayV Plugin
  • Rhapsody Player Engine Plugin
  • BlackBerry WebSL Browser Plug-In
  • Version 0.9.17, copyright 2008-2010 Veetle Inchttp://www.veetle.com/
  • Version 0.9.17, Copyright 2006-2009 Veetle Inchttp://www.veetle.com/
  • Version 0.9.17, copyright 2006-2010 Veetle Inchttp://www.veetle.com/
  • NPVeohVersion4 plugin
  • Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers


  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv: Gecko/20100722 Firefox/3.6.8 ( .NET CLR 3.5.30729; .NET4.0C)

More Information

go and end the process ( via task manager and then launch Firefox. this is the only workaround I have so far

Helper7677 165 solutions 1653 answers

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Hanging at exit:

  1. Stop the running process: http://kb.mozillazine.org/Kill_application
  2. Reasons for hanging at exit: http://kb.mozillazine.org/Firefox_hangs#Hang_at_exit

Most often hanging at exit is caused by Extensions, maybe plugins. Try Firefox Safe Mode; don't check any items, just click "Continue to Safe Mode". http://support.mozilla.com/en-US/kb/Safe+Mode

If the problem does not occur in Safe Mode, disable Extensions and Plugins, one at a time or up to one half at a time, restart Firfox after each change. Narrow down until you find the problem:

Modified by Helper7677