http://blogs.msdn.com/cjacks/archive/2009/07/10/how-to-work-around-program-compatibility-assistant-pca-jobobjects-interfering-with-your-jobobjects.aspxI had a question come up in response to another post : I also have another side effect from this change.  I have a process that tracks processes via JobObjects.  With Vista I had to add a Manifest file to all my processes so PCA would not tracken-USCommunityServer 2.1 SP1 (Build: 61025.2)