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When typing into a web page, after 2 letters my firefox freezes says 'not responding' for 20 seconds + before allowing me to continue typing? Do I have a bug?

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New Contributor

When typing into a web page, after 2 letters my firefox freezes says 'not responding' for 20 seconds + before allowing me to continue typing? Do I have a bug?

When typing into any webpage, ie updating Facebook, my blog, logging into banking etc, and also when typing in this message now, I type two characters and then no more appear. After about 5 seconds I will get a message saying 'not responding' and about another 15 to 20 seconds later one more letter typed will appear and I can then continue typing.

I'm inevitably paranoid it's a virus and have virus checked several times.

NB it has happened twice while I've been writing this. Once after I'd typed the first 2 letters of the first sentence, and a second time in the middle of writing 'checked' in the sentence two before this one.

2 REPLIES
Site Moderator

Re: When typing into a web page, after 2 letters my firefox freezes says 'not responding' for 20 seconds + before allowing me to continue typing? Do I have a bug?

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.


Further information can be found in the Refresh Firefox - reset add-ons and settings article.

Did this fix your problems? Please report back to us!

Site Moderator

Re: When typing into a web page, after 2 letters my firefox freezes says 'not responding' for 20 seconds + before allowing me to continue typing? Do I have a bug?

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe mode start window or otherwise make changes.

You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox Profile Folder that store session data.

Delete the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox Profile Folder.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).


Which security software (firewall, anti-virus) do you have?