XP was released in 2001, Let's just remind ourselves that the first ubuntu came out in 2004. A _lot_ has changed since the linux of 2001. Including the graphica

XP was released in 2001, Let's just remind ourselves that the first ubuntu came out in 2004. A _lot_ has changed since the linux of 2001. Including the graphical system (compiz, released 2006) everything in the 2.6 kernel (released 2003) the hardware abstraction layer/project utopia (somewhere around 2003), a new sound system, pulsaudio (2004). And if you take into acount that the start of windows vista's coding cycle lay before the release of windows XP, you might want to include the gstreamer media framework. They've come a long way. P.S. They never bothered to reimplement the security model. Though some improved models have been available since before 2001.