Virus vs. Operation System

Hi Greeks.

i try to write some kind of article about virus. Now, i have one last question to comleate my virus-report.

Does somebody out there, know some kind of statistic or memorandum ( with url will be greate) about the exposure of virus at difference operation systems (linux, mac, win9x, winnt, winxp, solaris...)?

The most "in the wild" - viruses works with (or against) windows. But wich version is more vulnerable and why?.

Thanks a lot for your help...and by the way...sorry about my english :-)

hm...
Let se in google......

http://www.techworld.com/security/ne...fm?newsid=1798

http://www.geek.com/news/geeknews/20...0618025628.htm

http://www.antionline.com/showthread...hreadid=248489

Here it comes

Operativ System makes virus to work, evry one knows