I couldn't find a MacBook List so here goes… I cannot get the Dock to Hide/Unhide using the OPT-Cmd-D key combo. The dock hides, and then immediately pops up again. Or if is hidden, it pops up and then immediately hides. WEIRD!! I am able to to do a Hide or Unhide with the Dock item in the Apple menu. MacBook, 2 Ghz Intel Core Duo, OS X 10.4.8 Any ideas? Ray Raymond P Reedy popreedy at comcast.net