I've got a 1.5 GHz 15" PowerBook G4 with 2 GB RAM. Despite its age, this machine is quite good and, though slowly, does everything I need it to do. Within the past week or so, it's suddenly decided to take a very long time to go to sleep... about a minute or so. It does not matter whether or not I simply close the lid or give it the sleep command from the Apple Menu. Before this happened it took the computer about 1 second or so to get to sleep mode. I have tried restarting the computer several time and ran all the cleaning/maintenance options through OnyX and nothing helps. I've done a Google search and found nothing, nor was I able to find anything on this forum either. Anyone have any ideas?