Version: (using KDE KDE 3.3.0) Installed from: Gentoo Packages according to the kde HIG: http://usability.kde.org/hig/current/menus-standard.php#menus-standard-view The stuff that is currently in "Window" belongs in the "View" menu.
except "Show Terminal Emulator" and "Show Navigation Panel" Which according to the HIG belong in settings. see bug 88644 for that.
This is still the case in 3.5.5 and the HIG clearly states that "All actions available in the View menu manipulate the view of the content area..." The first three sections of items in the Window menu all manipulate the view of the content area.