To all you MS detractors.
I'm no fan of MS or Windows (I run xubuntu at home) however all this advice that people should change OS is frankly niaive. If there is such a thing as an anti-fanboy then that's what you saddos are.
People use MS for all sorts of reasons:
It's what came with the PC.
It's what they use at work.
It's the one that most of the commercially available games work on.
etc.
etc.
etc.
Normal people are not going to wipe their PC and install a new OS and you are living in cloud cuckoo land if you really expect it to happen. I will happilly fit a car with better components, Honda V-TEC in a Mini? (a real one) No problem, it's a better engine than an A series. However I wouldn't expect most people to do the same, they don't have the knowledge or the skills.
As for the corporate use of Windows. As long as your IPS is up to date this particular exploit, and indeed most exploits, will have no effect on you. You do have a decebt IPS don't you?