Hello,

Try disabling graphics hardware acceleration. Since this feature was added to Firefox, it has gradually improved, but there still are a few glitches.

You will need to restart Firefox for this to take effect so save all work first (e.g., mail you are composing, online documents you're editing, etc.).

Then perform these steps:

1. Click the menu button and select Options on Windows or Preferences on Mac or Linux.
2. Select the Advanced panel and then the General tab.
3. Uncheck Use hardware acceleration when available.
4. Restart Firefox and see if the problems persist.

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

If the problem is resolved, you should check for updates for your graphics driver by following the steps mentioned in these Knowledge base articles:

• Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

• Upgrade your graphics drivers to use hardware acceleration and WebGL

Thank you.

Unfortunately, it did not resolve the problem.

Please update to the most recent version of Firefox:

• Update Firefox to the latest release

I am also inclined to think that you might want to mess with the internet connection configuration in Firefox:

• Advanced panel - Accessibility, browsing, network, updates, and other advanced settings in Firefox

If this is not the case, are there any drive files or customized folders that are different on this computer compared to a pc?