Using laptop Toshiba L650 running Win 10. Whenever Firefox asks me to save a web page password I always tick "Don't save" Recently I found going to Facebook my page came up without me logging in. The same has happened with PC advisor. I logged in once Clicked "don't save, but when going to the site again I was able to ask a question without logging in. I uninstalled and re installed firefox. No change. I find that I cannot open Credential Manager to check save passwords. I have not checked into my online banking for fear that something is getting access to my passwords. I use AVG Internet Security.