Xandros 4.0, the first new version of <A HREF="http://www.eweek.com/article2/0,1895,1979703,00.asp?kc=ewnws062106dtx1k0000599">Xandros' desktop Linux</A> distribution in a year and a half, arrived on June 20. Xandros 4 is based on Debian Sarge Linux, with LSB (Linux Standard Base) improvements courtesy of the DCC Alliance's Common Core. It also includes the KDE 3.42 desktop interface. This latest version of the first mass-market Linux desktop, the long-gone Corel Linux, has added a variety of features designed to make it a drop-in replacement for Windows.