It doesn't work for me on my year-old thinkpad, or on my desktop, or on my server, and it is broken on two other computers I know of. Hibernation issues in Ubuntu aren't exactly an uncommon problem: https://bugs.launchpad.net/ubuntu/+source/hibernate
I am using 12.04.1, but I made a mistake, in that I confused hibernate with suspend. Suspend works for me; I've never tried hibernate. The link you provide mentions only hibernate in the title but seems to be talking about suspend as well. Strange, since suspend works for me and I didn't do anything to enable it.
I don't dispute that suspend and/or hibernate is broken on many machines using some recent versions of Ubuntu. But it still "works for me": just another datapoint.
Additionally, it is disabled by policykit in releases past 12.04: https://bugs.launchpad.net/ubuntu/+source/policykit-desktop-...
So yeah, Hibernate is broken in Ubuntu in 2013, and your downvote doesn't change that