By 
Philip Churchill on March 04th, 2008  
The add-in PowerSwitch that puts WHS into standby and resumes it at user defined times has been updated to version .810 which contains the following bug fixes:
- Removed string usage and replaced with enumerated types.  Hopefully this fixes an issue where the German WHS was not entering sleep or hibernate.  A new registry setting called “ShutdownProcess” is used to denote how to shut down.  Values 0 = sleep & 1 = hibernate.  The old registry setting using string value is no longer used.  Re-enter your values into the PowerSwitch tab and hit Ok to set the new key.
- PowerSwitch.exe now waits 2.5 minutes before attempting to enter sleep/hibernate when woken unexpectedly.
- Fixed issue that prevented PowerSwitch.exe from shutting down after waking computer.
- Added additional logging information.
 
 
UPDATE: 4 March 2008 Version 820 is now available which adds a check for backup/demigrator before initial standby.  The check was only being done when entering standby upon unintended wake ups.
For more information on PowerSwitch see here.