"LockAndOff" will lock (block) hardware buttons on your communicator, then immediately turn the device off (power off, switch off). It doesn't require installation, and has been fully tested with Windows Mobile 6. You can unlock the device by the standard way.
Download:
http://elenamd84.narod.ru/programs/LockAndOff.zip
Author's website:
http://elenamd84.narod.ru (english version)