I have a late 2009 Mac Mini running 10.6.2 with an occasional odd problem. I'll go up to the menu bar at the top and discover that its not the appropriate menu bar for the application I'm in. I might be in Safari (responsive in the window), but it says "Finder" in the menu bar - or Quicktime or some other open app. I can cycle through the windows without a problem, but the menu bar doesn't change. Then all of a sudden, everything is fine. Anyone have a clue as to what's going on?