Keeping your web browser up to date is very important for your own safety and security, but also it is important to install the latest add-ons whenever new versions become available.
What is a plugin? Plugins power videos, animation and games They're built outside of Firefox by companies like Adobe Systems and Apple Plugins don't always update automatically. Why should I update my plugins? Old plugins can interrupt browsing and waste your time. Old plugins increase your risk for attack by malware, viruses, and other security threats. Updated plugins have improvements that make the web better and safer for you.
What is a plugin?
Why should I update my plugins?
A simple way to check if you always have running the latest plug-ins is visit the Mozilla Plugin Check & Updates .
Also, if you see something strange or in case of doubt a safe solution is disable this plugin.
How do I disable a plugin? In Firefox: Open the Tools menu. Choose Add-ons. Click the plugins tab. Click on a plugin in the list. Click the Disable button. Caution: disabling a plugin means that you will no longer be able to do certain things. For example, if you disable Flash, you will not be able to watch videos on YouTube.
How do I disable a plugin?
In Firefox:
Open the Tools menu. Choose Add-ons. Click the plugins tab. Click on a plugin in the list. Click the Disable button.
Caution: disabling a plugin means that you will no longer be able to do certain things. For example, if you disable Flash, you will not be able to watch videos on YouTube.
LINK : Plugin Check & Updates — Mozilla