Is there a way to determine which program is starting a computer in hibernation?[face=Times][/face]

   It is probably the network waking it up.  That can be disabled.  Please see the following two threads for more information:

Hibernation wakes up - http://www.regvac.com/forum/m-1144613531/

Satellite P100 will not stay in hibernate mode - http://www.regvac.com/forum/m-1220399199/

Neither of the threads solved the problem.

Additional info I should have provided initially follows:
My os is Windows XP Home SP3
I checked "Scheduled Tasks" - nothing there would be causing the wakeup from hibernation.

In light of my experience, i think you are right in that one of the problems - that with the display - could be down to your graphics card. I have just had to disable Hydravision on my ATI card for a very similar reason, only in this instance it was the task boxes in Outlook which were displaying gobbledeygook.

I have had a similar problem in the past, too, with some of the more esoteric features on Nvidia software.

Create a new User account and log on to that and try hibernation and see if that works.

My hibernation problem has been solved.  I believe that an Iolo Techbologies product (System Mechanic Profession - Versions 8.0.0, 8.0.1 and 8.0.2) was causing the problem.  I just downloaded and installed Version 8.0.3 and my computer nolonger awakens from Hibernation.  Thanks to all who responded.

Ken Kazmar