ok, me too, check this out. i was upgrading my laptop from 1G to 2G DDR memory so i put my computer in hibernation. after i put the new memory in, i reboot. so when the computer comes out of hibernating, it says: 
Your system firmware did not preserve the system memory
across the hibernate transition. If you proceed with resume your
system could behave in an unexpected manner after resume completes
It is recommended that you save all your data and reboot 
the system after resume finishes.

Kindly check for a firmware update with your system vendor
as it may fix the problem.

Use the arrow keys to hightlight your choice:

Continue with system resume
Delete restoration data and proceed to system boot menu
i selected Continue with system resume but it didnt work, i got another error so i had to reboot all my data was lost check it my next error: Your Computer Cant Come Out Of Hibernation