I run CCleaner (latest 3.x version, portable), click Yes in the UAC dialog, and then I can't simply use the keyboard (press Alt+A for example to Analyze), since the main app window is not the active one! What's the possible reason for this strange behavior? When I run a program, I expect it to be the current active window so that I can start using it immediately, instead of having to Alt+Tab to it or click the main window with the mouse every time.