We all survived for many years with window managers which allowed applications to steal focus, and most other window managers still work that way, so I don't consider this a serious vulnerability.
That said, the focus stealing prevention in metacity is working fine for me in both dapper and edgy. ** This bug is no longer flagged as a security issue -- New windows stealing focus -- and passwords? https://launchpad.net/bugs/54741 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs