Follow this timeline, if you will:
Thursday, 5:20: Start-->shut down-->yes, I want to shut down. The computer begins to shut down. Sometimes, it will hang at this point and tell me that another program has not closer properly and two dialogues later it will begin the shutdown process.
Thursday, 5:21: Seeing no issues (although the computer, as usual, is taking forever to shut down) I turn off the screen and go home.
Thursday, 5:22ish: Apparently, it decides not to shut down.
Friday, 9:02: I go to turn on the computer to find that it hasn't shut down. I can't get it out of the cycle, so I say "OK" to the dialogue and let it begin the process.
Friday, 9:03: I go off to the mail room and lunch room.
Friday, 9:05: I return, and find the computer with a soothing, empty blue screen, which would be great, except that there's nothing productive I can do with a soothing, blue screen.
Friday, 9:06: I try moving the mouse (it moves). I try Ctrl-Alt-Delete. Nothing. I try it again. Nothing.
Friday 9:07: I crawl under my desk and unplug the machine.
Friday, 9:08: I plug it back in and push the power button. It starts.
Friday, 9:09: I log in and begin my day.
Now, you'd think that an energy efficiency organisation would employ an operating system which would shut down (and not draw power all night) and that it would be worth my time in increased productivity not to spend ten minutes making my computer work. Ha.