BUGS
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- Some dialogs of an on-top window are put behind the main window.
- Session management fails (at gnome-session).
- Netscape does not response to ButtonPress after saving link twice.
- Exist double free.
- With netscape maximized, newly opened another window of netscape
  become the normal window of the maximized size.
- A transparent wrapper of icons sometimes overlaps the other icons.
- Cannot use Meta+Delete in some environments.
- Alt+Tab activates a window in which mouse cursor is contained when
  FocusOnClick is False and two windows are located without overlapping?
- A focus becomes incorrect if you click a menu item and drag to the
  edge of the menu.
- Fail to play au files in Linux.
- Qvwm sometimes crashes at restart.
- Sometimes a window with no contents is shown. (the cause is unknown) 
- A screen flickers when you use an application which uses private
  colormap. 
- The taskbar flickers before hidden when you shrink it when
  TaskbarAutoHide is True. 
- Sometimes an input focus is left in a non-active window. 
- Qvwm crashes when you use tgif. (not reproducible) 
- Sometimes qvwm freezes. (the cause is unknown) 

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Translated partially by Yukihiro Nakai <Nakai@Mlab.t.u-tokyo.ac.jp>