We have Task Scheduler set to run a task M, T, W, T at 2AM. The "Wake the computer to run the task" is checked as the computer is usually in hibernate at this time. On the days that no task is scheduled (F, S, S) the computer resumes from hibernate at 2AM. The task DOES NOT RUN (as it is not scheduled). There is no entry in the Task Schedule log for these days (and there shouldn't be) and the return to hibernate after the task completes does not kick in as it does on the days that a task is scheduled. Why is the computer waking on the no event days (and it is not even returning to hibernate)? We have other computers with the same task schedule that are working as scheduled. I have confirmed that it is the task that is waking the computer (and not a BIOS setting, etc). If I disable the task the computer does not wake. I have also tried deleting and recreating the task. The computer is running Windows XP Service Pack3.