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Firefox 18 does not work on Win 7 machine

Posted

I've recently installed Firefox 18 on my Win 7 machine. It does not work properly. It takes a very long time to start, and when it has started it sticks when I move or click the mouse within most web pages.I can search with google and go to pages selected from the data presented. But once I get onto a page, almost any mouse action locks it up.

(I am in the UK. An example of failure is if I call up John Lewis with Google, and select the Electricals entry in johnlewis.com. Then trying to select anything on that page locks up)

I've gone back to Firefox 5.0, which is the most recent previous version I can find. That seems to work perfectly.

Chosen solution

Try the Firefox Safe Mode to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.

(If you're not using it, switch to the Default theme.)

  • You can open the Firefox 4.0+ Safe Mode by holding the Shift key when you use the Firefox desktop or Start menu shortcut.
  • Or use the Help menu item and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Don't select anything right now, just use "'Start in Safe Mode" To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again. If it is good in the Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one.

Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.

When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.

Read this answer in context 6

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • Next Generation Java Plug-in 10.11.2 for Mozilla browsers
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.01

These are what is there with Firefox 5. I don'e know what was there with version 18.

Application

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

More Information

I can't run V18, so can't give anything useful here.

Andrew
  • Top 25 Contributor
  • Moderator
251 solutions 3015 answers

Chosen Solution

Try the Firefox Safe Mode to see how it works there. The Safe Mode is a troubleshooting mode, which disables most add-ons.

(If you're not using it, switch to the Default theme.)

  • You can open the Firefox 4.0+ Safe Mode by holding the Shift key when you use the Firefox desktop or Start menu shortcut.
  • Or use the Help menu item and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Don't select anything right now, just use "'Start in Safe Mode" To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shift key) to open it again. If it is good in the Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one.

Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.

When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.

Helpful Reply

Thank you very much. That did the trick. The offending add on was shockwave flash 11.5.502.146. Is there a newer version that I need? - or maybe I don't need it at all.

I hope this helps others too.

John

Andrew
  • Top 25 Contributor
  • Moderator
251 solutions 3015 answers

Awesome! Thanks for reporting back. Have a nice day and take care!