I'm running Helena, and using the ATI drivers, I have it set to single display + dual desktop, the second desktop(my tv) shows the same theme as I'm using, but it's in Ubuntu style(top bar applications, places, system) as well, it's the ubuntu logo instead of Mint....not a big deal(to me anyway) but thought you should know

I'm using Gnome, if that helps
I don't lose things. I place things in locations which later elude me.