That's a feature. If you are booting from live CD, you _want_ to erase
any hibernation image.
it's been stated that doing a std and booting another OS (including
windows) is a valid and common useage. saying that if you boot another OS
you trash your suspended image doesn't sound reasonable.
If you hibernate your machine, boot from live cd, and change anything
on any filesystem, you are pretty likely to loose that filesystem.
Doing that with Windows is okay as Windows do not usually write to-