Most non-AIR Rich Internet Applications (RIAs) built with Flex run inside Adobe Flash Player which in turn runs inside the browser. LiveCycle Workspace ES2 is one of these applications.
Since these applications could potentially handle sensitive customer data, privacy issues come into play. One of them is the question about what data is stored locally and where. Flash Player Product Manager Emmy Huang’s blog entry “On Improving Privacy: Managing Local Storage in Flash Player” in the Flash Platform Team Blog provides needed details on where things currently are and where things are going.
To determine what version of Flash Player you currently have, click here.
Also, see this regarding Flash Player support for “private browsing”.