I have a Dell Precision Workstation that does not power off upon a shutdown. Windows XP Pro appears to go through the motions of a shutdown properly accept for the power off of the PC. Widows closes all open tasks and connections, my screen closes to energy savings mode but the PC remains on. If I boot up in safe mode the PC shuts down and powers off the PC. Its only when I boot up in normal mode I see this happen. Perhaps XP is having trouble shutting off one of the final processes. Any ideas as to what may be causing this?