If you have a Shutdown Event Tracker pop-up when you don't think you should, you can clear a few Registry keys to get rid of it:

Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Reliability

Delete the contents of these keys:

• DirtyShutdown
• DirtyShutdownTime
• LastAliveStamp
• TimeStampInterval
• LastComputerName