1) CD expansion bay door will not stay latched when closed.
Resolution:
Push in the middle of the door to close, near the eject button. Because the door is flexible, it is possible to not fully close the CD tray by pushing at the edges.
Additionally, there have been instances where the whole expansion bay device needs to be reseated. If pushing on the door's center does not help, reseat the expansion bay.
2) The expansion bay latch is difficult to move or sticks and requires force to move.
Resolution:
With use, the expansion bay latch should loosen some, which will allow it to be moved easier.