Somehow I've managed to really screw up my desktop. The effects are subtle but very bad. I moved the task bar to the top of the screen because I wanted Cairo-Dock on the bottom, no problem there. However the task bar has become "black" and somewhat transparent, and I can't read anything on it. In addition full screen windows are now under the task bar so I can't reach the menu bar on top. Before the task bar was not part of the desktop area that windows could occupy. In addition Cairo-Dock no longer has the transparency it once did, as if KDE's compaze manager is gone. How can I restore all of my KDE settings back to 'factory' default so I can start from a know working condition. If I create a new user, that user's settings are virgin (except for the fact that my Cairo-Dock settings seem to have been inherited by the new user, along with my startup settings). This being Mint-KDE13 and I'm using the user set up during installation.