I am a new Linux Mint user (I've been using Ubuntu previously and I know LM is a derivative of Ubuntu). I just installed LM v4.0 KDE CE and seem to have a strange problem with compiz fusion. When clicking windows to focus on them, once clicking them, they do not get brought to the front if stuff is on top of them. Only when clicking in the titlebar area do they get brought to the front. If I disable compiz fusion, I do not have this problem.