Is it generally acknowledged that Hibernation in Windows XP, although a nice idea and one that usually works, is flawed?

After about a week of using hibernation over shutting down, my computer refused to boot from the system dump - instead, it hung and I had to discard the dump and lose whatever was in it. Also, after booting from hibernation, the mouse motion is always very slow, and the system generally pretty flaky.

I prefer hibernation when it works because it saves me having to save and close everything individually, it is much quicker to start up, and I don't really care about security on this PC. But if this is how well it is implemented, I'm not going to use it any more.

Thoughts?