Chosen Solution

Hello john_aku, Try Firefox Safe Mode to see if the problem goes away. 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 Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Once you get the pop-up, just select "'Start in Safe Mode"

If the issue is not present in 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.

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

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

if the above did not correct the issue, see : Corrupt localstore.rdf

thank you

Question owner

Hi Ideato, thanks for your tip, will try it and tell you the result.

Question owner

Hi Ideato, just followed your advice " start in safe mode " and it worked well. but as I closed the firefox to exit the safe mode and open it again, the problem is still the same. do you think it will vanished if I uninstall and then reinstall the firefox  ? otherwise i have to use the safe mode all the time. I really appreciate your advice.

Helpful Reply

Nooo, don't uninstall, see : Disable all extensions and then one by one Test for faulty extensions

thanks

Question owner

Ok, thank you very much for your help. Hope can solve the problem, will let you know. Thanks again.

Question owner

Problem solved by removing the extension. Ideato, you are my hero, thank you very much for your advice.

you are welcome