I'm having a strange problem with my dock and dashboard, whenever I add Items to either they quickly vanish, not allowing me to change them. With the dock, I can't add Flash CS4 to the dock, it will just appear, then disappear. With the dashboard, I can't add any widgets I've downloaded without the dashboard closing to desktop. I've tried reinstalling the widgets, no luck. Has anyone had this problem before, or know how to fix it?