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once closed, Firefox keeps running in the background and ties up 50% of my CPU at 112mb of memory. WHY?

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firefox keeps running in background after closing, ties up 50% of CPU and 112mb of ram. why?

All Replies (7)

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Sounds like it is hanging when you exit and later try to restart Firefox.

You need to update the following. The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question.

  • Shockwave Flash 10.1 r85
  • Next Generation Java Plug-in 1.6.0_22 for Mozilla browsers
  1. Check your plugin versions on either of the following links':
  2. Update the Flash plugin to the latest version.
    • Download and SAVE to your Desktop so you can find the installer later
    • If you do not have the current version, click on the "Player Download Center" link on the "Download and information" or "Download Manual installers" below
    • After download is complete, exit Firefox
    • Click on the installer you just downloaded and install
      • Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator"
    • Start Firefox and check your version again or test the installation by going back to the download link below
    • Download and information:
      • Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE)
      • Use IE to go to the above site to update the IE ActiveX
    • Download Manual installers.
  3. Update the Java plugin to the latest version.
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Thank you for the help. I started to update the plug ins and noticed it was actually running at 50% of CPU just sitting on a static page. I have completely uninstalled and reinstalled firefox 4.0 twice now. Still does it. before any plugins are added.

So, if I am sitting on a static webpage with everything loaded, and the CPU is still running at 50% tying up over 120mb of ram, then what?

Haven't closed a session so it can't be hanging up on the close out.

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Just keep following the suggested solution until you die.

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I've done everything suggested...and "oddbodd's" reply seems to be the best solution yet.

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I have this problem too.. Going to task manager/processes and ending the process works. Its a pain in the ass and I hope Mozilla fixes it soon. Not to metion it makes me wonder exactly WHAT Firefox is doing in there when its supposed to be OFF!! Its very disconcerting and am considering switching to chrome because of it.

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If you just did a Java upgrade you need to go back to version 6. The current version of FireFox is not compatible with the latest Java release.

If you havent upgraded yet... do so and follow the following steps: 1. Goto 'Control Panel' 2. Click on the 'Java' icon to display a menu 3. when the menu open click the 'Advanced' tab and then 'Default Java for Browsers' 4. The 'Mozilla Family check box will be unchecked. you need to check it. 5. click 'OK' at the bottom of the screen 6. reboot your computer 7. ENJOY! :D