I had everything setup just as I wanted, then a false click of the mouse changed it all. I have put most of it back, but some things are just broken:
When I did the click of death that broke everything (I don't know for sure what it was), my desktop icons were all gone. The icons that I have put back on my desktop (e.g. Libre Office Writer, Muon Software Center, Dolphin) were all VERY big (I'd guess about 96x96). I shrunk each of them, but can't get them to display text.
When I single click a desktop icon, it launches the app, even though double clicking (first click selects) is the selected option.
I can't move the desktop icons, even though they're unlocked.
I put a launcher on the panel associated with the taskbar near the Launcher menu button. Then I deleted it. But every time I login, it's there again.
I am using the Air theme (which is the default).
NOTE: I have another (administrative) user setup the way I want. Can I just copy some files to get identical appearance and behavior for the root login (the one I broke)?