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Firefox is refreshing 'old tabs' when switching to them, WHY?

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  • 2 have this problem

If I leave Firefox open for a long enough period of time and then click on one of my other tabs, instead of showing me the tab, it refreshes the page. This is incredibly frustrating and frankly, poor design. Depending on the content I was looking at, it may well be now gone.

I have Firefox 3 and 12, the problem did not exist there. Since switching to 17, the problem has cropped up. This is NOT restoring a session as the session was not terminated. The problem described in this post is similar here https://support.mozilla.org/en-US/questions/934200?esab=a&as=aaq

My browser.cache.check_doc_frequency is also set to 3. I do not want pages to auto refresh, EVER unless I press F5 or hit the reload button. Does anyone know a solution to this?

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • VLC media player Web Plugin 2.0.2
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • Next Generation Java Plug-in 10.9.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • 4.1.10329.0
  • Picasa plugin
  • Citrix Access Gateway


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

Occuring on multiple computers running Windows 7, fully patched and legal copies with Windows update.
Problem is consistent on Firefox 17 as long as the program has been open a few hours.
Problem did not exist on Firefox 12 or 3
I use tab mix plus, however I've always used tab mix plus - I do not see an option for refresh in TmP and I do not suspect it is the cause of the problem.
I have accessed "about:config" and attempted to try and stop it by searching for the word 'refresh' the only logical sounding refresh entry is "accessibility.blockautorefresh" which is stupidily named - that actually appears to block REDIRECTION not refreshing.