Thanks to those who responded to my earlier email on installing the OS 10.1.1 update...problem solved!
And for those who are interested and are already running Office v. X The problem with my G4/500 not going into deep sleep mode has been, to some degree, solved. I noticed that with no applications running my G4 would not go into deep sleep. However, I had Entourage open at one stage and my computer did then go into deep sleep. I found doing the following, which I found out about at Mac Fixit, helped, in other words allowed my G4 to go into deep sleep again. This relates to a startup item called Microsoft Database Daemon¹. ³After doing some digging this is what I found. Turn off Office Notifications then restart Entourage. With Entourage running go into the Startup Items. You will see the Database Daemon. Close the System Preferences and then close Entourage. Go back into System Prefs and the Startup Items. The Database Daemon is gone. Seems that Entourage puts the Database Daemon into the Startup Items everytime it is run but removes it when you exit if Office Notifications is turned off.² So far this has worked. So, for anyone that may also be experiencing this problem, I hope this helps. Michael [Non-text portions of this message have been removed]