Version: (using KDE Devel) On a dual head the menubar on top jumps from one monitor to the other when you select an application on that monitor. I don't really have a problem with that. When I go to an application that has no menubar the desktop menubar is shown (which I addressed in: 71484) the bug here is that that menubar is always on the left monitor; which makes the behavior internally inconsistent with all other applications. I think the menubar should always be on the monitor that has the (largest part of the) active window.
*** This bug has been marked as a duplicate of 51261 ***
Bug closed. Kdesktop is no more mantained.