Spyware, Bots, Rootkits Flooding Through Unpatched IE Hole

I was reading on line magazines and eweek .com had an interesting article about a new flaw in IE.
http://www.eweek.com/article2/0,1895,2017620,00.asp
It seems that we are always looking, patching and trying to find out how the bad guys are getting into our networks. This seems back wards to me, a good network should be looking at how it’s users should access the network and how you let them access the internet.
Sorry but Windows, XP, Vista just seems to pass this by. There is a patch for Vista and it has not hit the desktop yet,