Does Six Sigma reduce coporate innovation?

In a great article in Business Week (June, 2007) , the struggle between efficiency and creativity is discussed with a 3M case study - is focusing on quality management going to push innovation to the back burner or can you somehow still drive innovation as part of the culture of the organization while being focused on reducing defects in process and products? The key is leadership, focused on creating a workable balance between driving efficiency and fostering innovation - with that you can indeed accomplish both.