Mozillla announced that it will soon start prompting Firefox users to upgrade select old plugins. This means that Firefox users who have outdated versions of the most popular plugins will soon see a notification urging them to update when they visit a web page that uses them.
Old versions of Silverlight, Adobe Reader and Adobe Flash on Windows are covered by this. In addition to this Firefox also automatically disables outdated version of Java for your safety.
Flash, Acrobat Reader, and Java flaws account for most of the malware installs, and most users are bad at keeping these things up to date. Running a stack of update utilities is irritating to advanced users and confusing to novice users. Most people just want the same thing they used yesterday to work today, and are really annoyed when what worked yesterday starts nagging them to upgrade today. All this does is make the malware industry happy.
I noticed during weekend that my Firefox on several computers automatically opened Plugin Check page for me when I started it. And the result made me to update some of the plugins that were marked to be out of date. I recommend that you also check your plugins and update them to up-to-date versions.
It is also a good idea to check your Firefox Add-ons ass well. Keep them up to date and disable ones you don’t need.