That's funny! That oddball button has been there and I've never had the curiosity to look at it (or the accidental triggering of it). I'll have to poke around. I did set up a separate administrator account in case I want to work on a completely different clean area (and I don't know if it will access existing files in my main administrator account.)

Discipline is to use the computer as a user and not an administrator so less stuff can affect the computer if something malware-like happens while you're working, but I would rather just set things up as I need them.