All Windows developers should take a look at this brief training material on Service Pack 2 for Windows XP. 

”Welcome to the Windows XP Service Pack 2 training course for developers. It is the goal of this course to make you, the developer, aware of the implications in the deployment of Service Pack 2 on computers running on the Windows XP Professional and Windows XP Home Editions.”

I appreciate that Microsoft has really been putting forth an effort to take care of its developer community.  It is also very much apparent that the security push they have been talking about is real.  I spent the last 2 days at Microsoft security events learning about some of the ways web application are vulnerable and how to fix them.