It used to be that from within Windows (v7) I could easily close down Logos if I was running low on memory by right-clicking on the Logos icon on my task bar and choosing "Close all windows" -- this would be the option (rather than "Close window") most of the time for me, because I always run with my Library maximized in a floating window. "Close all windows" would close the main Logos window and any floating windows all in one fell swoop.
But now for the past few beta versions (not sure when this started), I can no longer do "Close all windows." When I try, Logos just beeps and closes only the floating windows. It doesn't matter how many floating windows I have open, this is now the behavior. I then have to do it again (though this time the command is called "Close window") to actually close Logos.
Expect: "Close all windows" to close everything including the Logos main window, as that's the standard behavior for Windows apps when you choose that command. And no beep. There's no need for a beep -- no alert message comes up or anything.