(My apologies if this is something really basic I just didn't hit on the right search terms for here or elsewhere.) When I leave home I want to put my PowerBookk G4 into sleep mode so my data won't be accessible to intruders. But can I require a password to wake from sleep mode WHILE allowing background tasks (ongoing or set by a timer to start later) to run--that is, allow previously-keystroked tasks while requiring a password for anything new? Seems this would be extremely valuable. Thanks.