New Firefox: Parental point

It's a very brief, positive look at the latest version of the Firefox browser (for Mac, Linux, and Windows) in the New York Times. Sounds great: powerful, fast, stable, easily customizable, etc. But parental antennae go up upon reading this: "One valuable new feature for those browsing on shared computers - or at work - is a one-click 'Clear Private Data' function that flushes out any record of browsing, downloading, or saved passwords." You see it too, right? Kids able to erase where they've been on the Web, hide passwords, or cover their downloading tracks at the click of a mouse? Firefox is a great browser that keeps getting better, but sometimes there are kid-protection and PC-security downsides to new features in any Net-related software.