Within the past month or so I've noticed that my Win7 SP1 desktop has stopped returning to sleep after the task scheduler runs any one of the 3 scheduled tasks for which "wake the computer..." is set as a condition. I put the system to sleep each night with "defrag", "restore" and "backup" set to run in the pre-dawn hours of the mornings or 3 different days. For the two years since the system was built, the tasks ran as scheduled and I found the system in sleep mode the morning after each one ran. But a few weeks ago I noticed that the system was already awake each morning when I arrived. I can not think of anything that might have been done to cause the change in behavior; the triggers and conditions for each of the 3 tasks are unchanged. I'm hoping that there is some minor adjustment that will correct the system's behavior.