> In Outlook, when I copy some items, sometimes, I see a right pane
> opening up and showing me the current status of the last copied
> objects. How can I turn that off?

When the pane opens, at the bottom you'll find an Options button. Click on it and disable all (I like being extreme, but I guess what you want is the first option).

One way to get that same pane is to click on Edit... and then on Office clipboard...