unexpected workspace transposition I am using yosemite and take advantage of workspaces.  Occasionally, my workspace locations get transposed.  E.g. workspace 2->3 and workspace 3->2.  I use ctr-N where N is the workspace that I want to go to.  What is the hot key or command that causes this to happen?  It happens to me every once in a while and I can never seem to figure out what I have done to cause this to happen.
Possibly System Prefs > Mission Control > Automatically rearrange Spaces based on most recent use.