Yuyutsu,
Not really true. The X level where most of the desktop facilities live
only appears to be a Windowes like enviroment.
However lurking immeadiatly below it is the full blown daemon.
That is why I believe that viruses and other malware do not appear.
They do not get written as the effort and fewer m/cs do not make it
worth while. The malware even if it gets loaded, nothing is where it
should be and anyway it can't be started.