Version: (using KDE Devel) When I select 'Current application's menu bar' for the menubar at top I get the active window's menubar at top; and when I make another window the focussed one, the menu bar changes. This does not alway happen here is an occation when it does not. Start a konqueror; make it active and notice that the correct menubar is showing. Go to 'Location -> new window' and see a new instance of konqueror appear. Notice that if you make that new window the active window the menubar at top does not reflect a konqueror, it shows the desktop-menubar.
I'm sorry; its completely different from what I reported before. _all_ applications started since the setting has been made to show menubar at top will have their menubar on the left monitor of a dual-head setup. Only applications already running when I switched are on the correct one. Makes me wonder if the menubar (the widget) is created on the correct monitor..
*** This bug has been marked as a duplicate of 51261 ***
Bug closed. Kdesktop is no more mantained.