Hibernate setting changes XP?

I am running a laptop on XP pro.

I set the computer to hibernate when the lid closes, and it works perfectly.



However, eventually I will reboot the computer, and when I do this the setting reverts all by itself to 'sleep' when the lid closes.



Why? How can i get the setting to stay set?Hibernate setting changes XP?
How to troubleshoot hibernation and standby issues in Windows XP:



http://support.microsoft.com/kb/907477