Comment 1 for bug 772570

I am also affected by this bug.

Clicking on 'System>>Preferences>>Desktop Drapes' has seemingly no effect.
running Drapes in the terminal yields this output:
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Exception in Gtk# callback delegate
  Note: Applications can use GLib.ExceptionManager.UnhandledException to handle the exception.
System.DllNotFoundException: libX11.so
  at (wrapper managed-to-native) Egg.TrayIcon:XInternAtom (intptr,string,bool)
  at Egg.TrayIcon.OnRealized () [0x00000] in <filename unknown>:0
  at Gtk.Widget.realized_cb (IntPtr widget) [0x00000] in <filename unknown>:0
   at GLib.ExceptionManager.RaiseUnhandledException(System.Exception e, Boolean is_terminal)
   at Gtk.Widget.realized_cb(IntPtr widget)
   at Gtk.Widget.gtk_widget_show_all(IntPtr )
   at Gtk.Widget.ShowAll()
   at Drapes.AppletWidget.CreateNotifyIcon()
   at Drapes.AppletWidget..ctor(AppletStyle style, Nullable`1 size)
   at Drapes.DrapesApp..ctor(System.String[] args)
   at Drapes.DrapesApp.Main(System.String[] args)
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is the cause of this natty's new behaviour for the notification area?