Hi
http://www.heise.de/english/newsticker/news/145755
"Security-Enhanced Linux (SELinux) specialist and Red Hat developer Dan
Walsh has souped up the security mechanisms in Fedora and SELinux by
adding a desktop sandbox which he's calling "sandbox -X". Users can run
desktop applications of their choice inside his sandbox, which then
protects the underlying system from any possible damage."
Rahul