for me the linux OS security depends on the moderators knowledge but all i can say is that linux is much better that windows, but i heard something about this new OS that will come out i havent check it in the net that one is cann longhorn (i dont know if its true )one of our proffesor tell us that even Microsoft windows company uses linux as there OS is http://uptime.netcraft.com/up/graph/....microsoft.com check out this site .....
here an info about the "longhorn" http://www.winsupersite.com/reviews/longhorn_alpha.asp if you wanted to check it