When I modify an adjustment layer in Photoshop CS6 -- for example when I move a point on a Curve adjustment or adjust a slider in any adjustment -- the display is not always live. In other words, sometimes the change shows up while I am moving the point or slider. But often, it doesn't display until after I let go of the point or slider. For a professional retoucher (me) who spends a large part of every day making color corrections, this is a serious bug!!