You're the first. I and many other editors here locally don't lose anything at all. When it crashes, if we do a Force Quit, and when we quit properly, not a single thing is lost. Are you sure you're losing that much? I've not seen a system yet doing that. FCP X uses Lion's new permanent save state, it's saved every move you make, not at timed interverls.
My auto save worked... Thank god if i would have lost my 6 hours worth of editing i would have killed someone.... ( not really)