Please check if all your plugins are up-to-date. To do this, go to the Plugin Check site.

Once you're there, the site will check if all your plugins have the latest versions. If you see plugins in the list that have a yellow Update button or a red Update now button, please update these immediately.

To do so, please click each yellow or red button. Then you should see a site that allows you to download the latest version. Double-click the downloaded file to start the installation and follow the steps mentioned in the installation procedure.

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All of them.

Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

Sourjobraato Banerjee said

Please check if all your plugins are up-to-date. To do this, go to the Plugin Check site. Once you're there, the site will check if all your plugins have the latest versions. If you see plugins in the list that have a yellow Update button or a red Update now button, please update these immediately. To do so, please click each yellow or red button. Then you should see a site that allows you to download the latest version. Double-click the downloaded file to start the installation and follow the steps mentioned in the installation procedure.

Here are the plug-ins: DocuCom Pdf Plus 2.0.0.12 Nvidia 3D Vision 7.17.13.4475 ==> listed twice OpenH264 Video Codec provided by Cisco Systems, Inc. 1.1 Shockwave Flash 16.0.0.235 Silverlight Plug-In 5.1.30514.0

This issue does not seem to be the problem, at least to me. Nonetheless, I really appreciate you taking the time to offer me suggestions. Thank you. Paul Consolver

FredMcD said

Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All of them.

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Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

I had no problems after disabling hardware acceleration with the first few sites I went to. However, the next in which I was going to send a message froze. So it would appear the hardware acceleration is not the problem, at least so far. I am going to try to use these suggestions in as many ways as I can, but if there are any others I would appreciate them. I should also add that I have not experienced this problem in IE 11, (again, another qualifier) at least so far. Again, thank you for your interest and suggestions. Paul Consolver

You can check for problems with the sessionstore.js file in the Firefox profile folder that store session data.

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
• http://kb.mozillazine.org/Profile_folder_-_Firefox
• http://kb.mozillazine.org/Multiple_profile_files_created

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

You can use this button to go to the currently used Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
• http://kb.mozillazine.org/Profile_folder_-_Firefox

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

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 files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

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

croyd46 said

Here are the plug-ins: Nvidia 3D Vision 7.17.13.4475 ==> listed twice

NVIDIA 3D Vision Streaming plugin for Mozilla browsers NVIDIA 3D Vision plugin for Mozilla browsers

These are separate programs. A copy of a program would have the same full name but different version numbers.