I cannot uninstall Spanish spelling checkers
I have twenty-one Spanish language spelling checkers on my right-click/Languages menu. I cannot find where they are installed, nor can I see how to uninstall them. I only have English in my Tools/Addons/Languages.
ప్రత్యుత్తరాలన్నీ (1)
Such items are usually added by the Ubuntu Linux distribution that you have, so try to ask at the Ubuntu forums about how to disable or remove those not needed entries.
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.org/kb/Safe+Mode
You can also try to install the official Firefox version from the Mozilla server if you currently use the version from the Ubuntu repository.