Our setup at work is a Windows XP Pro workgroup with 3 PCs and a laptop. I've set up various scheduled maintenance tasks to run on a daily basis - clearing temporary files, backing up data and defragging. The last task to run on each PC is the defrag, running O&O Defrag version 6.0 and the option is set to "Restart and shut down after Offline-Defragmentation".
Sometimes they all shut down, sometimes one or more is left on.
Any ideas please??