Recently (about a month or two ago), the Superdrive on my G5 started acted strangely. When I insert a CD, it does not show up on the desktop, but is recognized by the computer as being present in the drive... it just doesn't show up. I've check the Finder prefs and View Options, on top of that the CD/DVD menu in the System Prefs but to no avail it still is sporadically appearing, or not. Anyone have any suggestions about this?