Firefox 20.0 released with Per-window Private Browsing

Update: For Ubuntu Linux, Windows and Mac: Firefox 20.0 was released today. Tossed in this version is an enhancement that allows you to open a new private window without closing your current browsing session. A “feature” well known to both Chrome and Opera-browser users. Also present in this version is a new the Download Manager in the Firefox toolbar that permits you to monitor downloaded files without having to switch to another window. Together with the eleven patched vulnerabilities in the previous current version, Firefox 19.2. is also the feature described as having the “ability to close hanging plugins, without the browser hanging.”