Everytime I try to open a home page in another website I get: Firefox prevented this site (ie. the website)from asking you to install software on your computer. on the next bar it says: SYSTEM UPDATE REQUIRED - A critical software update is needed for your browser. Click Allow to update now. When I open allow inside the box is this: Firefox upgrade(''game play labs)'' -https://d3lvr7yuk4uaui.cloudfront.net/inst/FirefoxUpgrade.xpi'''