I run two monitors with my desktop "extended" over both.
All has been well with the Sidebar sitting pretty on my main monitor (which, incidentally is on the right-hand side on my desk).
However, I suddenly found, upon booting up one morning, that my settings had disappeared. I have reset them, but I now find that the Sidebar is sitting on my No#2 monitor, which effectively means that it is in the middle of my desktop, if you follow me.
This isn't a show-stopper for me, although I sometime don't switch the No#2 monitor on.
I'm trying to find a way to reposition the sidebar, as all I seem to be able to do is turn it on and off.
Any ideas good people?

Doh! I just knew it would be something simple. Thank you very much.