Which ever site I visit I get this notification in Firefox
FireFox prevented this site(sitename.com) from asking you to install software on your computer.
And then I get a red bar below it which says
SYSTEM UPDATE REQUIRED - A critical software update is needed for your browser. Click allow to update now.
Here's a screen shot
I am not sure what's wrong? Is it a viral infection or maybe my Firefox has gone bad ?
Thanks.