Version: (using Devel) Installed from: Compiled sources This is related to bug #152696, and is not bug #152917 The UI to select which screen the (a?) panel appears on is still just a twinkle in Aaron's eye.
You should be able to move panels to any screen since kde-4.1-beta2, and have it save properly so it is there the next time you log in. You can also add a second panel (by right clicking on the desktop) and move it to another screen (by bringing up the config panel and dragging it to the other screen).
*** Bug has been marked as fixed ***.