Also another thing that comes to mind is power stability in your area? My other G4 500 AGP system would wake from sleep from electrical current interference. For example switching on a 20" box fan that was plugged into the same circuit as the G4 would sometimes cause it to wake from sleep. Daniel J. Brieck Jr. On Apr 19, 2006, at 6:54 PM, Daniel Brieck Jr. wrote: > Pat, > > Do you have any PCI Cards installed recently ? > > When was the last time sleep worked correctly? > > Also faulty usb devices ,hubs, mice, printers, etc might cause you > system to wake from sleep. Try disconnect all the usb stuff and > then pressing the power button ( for one second ) on the front of > you G4 to put it to sleep and see if it can stay in sleep. If it > can stay in sleep mode with no usb devices connected, then try > waking it up by pushing the power button again. If it wakes up from > sleeps now then there is a suspect usb device causing the problem. > Try connecting each usb device you have one at a time and doing > this little sleep test after each device added. When and if it > breaks the sleep stops sleeping properly, then the last device you > connected is most likely the one at fault. > > Give that a shot and let us know how that works... > > Daniel J. Brieck Jr. > > On Apr 19, 2006, at 6:37 PM, Pat Crowe wrote: > >> My Quicksilver with 10.4.3 stubbornly refuses to stay asleep. >> 80% of the time it has fires itself up during my short or long >> absences. >> Any thoughts? >> PatC.