I love the look and feel of the KDE 4.x releases (although I preferred the 4.0 wallpaper) and having installed 4.1 (Kubuntu) was looking forward to having a play. The Login Manager in System Settings (on the Advanced tab) won't allow me to alter anything - the whole lot is greyed out. Right clicking brings up a box telling me that I need to click on the Modify button. The problem is, what Modify button? Unless I am being spectaculary unobservant, and that's not out of the question, there isn't o...