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What can be done about FireFox repeatedly "Not Responding"? i'd give more detail but don't get an error message.


I think it's something to do with Flash or java as it happens almost every time i go to stltoday.com or a tv news website. I'm up to date on Firefox and everything else, I believe.

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • Next Generation Java Plug-in 10.13.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Adobe PDF Plug-In For Firefox and Netscape "9.5.3"
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Google Update
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • 5.1.10411.0
  • Picasa plugin
  • GEPlugin
  • Google Updater pluginhttp://pack.google.com/
  • iLinc111 Install Plugin
  • Adobe Shockwave for Director Netscape plug-in, version 11.0
  • Citrix ICA Client Plugin (Win32)
  • 1.7.0069.3
  • np-mswmp
  • Office Plugin for Netscape Navigator


  • User Agent: Mozilla/5.0 (Windows NT 6.0; rv:18.0) Gecko/20100101 Firefox/18.0

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  • Top 10 Contributor
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2046 solutions 8901 answers

hello, maybe it's an issue with the protected mode in the flash plugin - you could try if downgrading to flash 10.3 (which is still supported) or disabling protected mode makes a difference.

Question owner

Thanks! I'll give that a try.

Question owner

That seems to have helped somewhat but has not alleviated the problem. Going to this page- http://www.smh.com.au/technology/technology-news/spying-eyes-or-a-bit-of-fun-drones-fly-off-the-shelves-20130216-2ek6s.html -caused Firefox to "not respond" for about a minute. The audio from the video that started automatically could be heard but i could not stop the video or leave the page until FireFox started responding. I didn't have a problem with it using IE. TIA!