Create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Thanks, cor-el. I am such a non-technical person that I'm really afraid to try something that complex.

I may try some other ideas first.

As a direct reply to your question.

YES many thousands will have that sort of symptom. Not surprising with a user base approaching 1/2 Billion Firefox users.

As for your own problem try these suggestions in this order and checking after each step.

1. Try Firefox in its own safemode. e.g. hold the shift key whilst starting
   • Diagnose Firefox issues using Troubleshoot Mode
2. Disable all plugins, and restart in safe mode again.
3. Try the firefox reset but read the article first. Bookmark any important open tabs, and the home websites of any Firefox extensons you have installed
   • Reset Firefox preferences to troubleshoot and fix problems

Thanks, John. I will try that tomorrow. I'm too frustrated tonight to do it now.

-)