OK. I've got a current Mac Mini and I've noticed that whenI move the cursor over any of the icons in the menu bar there is a spinning beach ball. I am unable to select any of those icons. When i move the cursor away, the ball disappears. I've noticed no problems or other strangeness. If I restart the machine, the issue is gone, but will resurface within a day. Very strange. This is a new machine, so I can't compare it prior OS installs. I've repaired permissions and reset the PRAM or whatever it is without results. Any ideas?