Q&A Sites seem to be the answer of the problems that forums and wikis suffer from.
edit: Looks like the release tag is available but optional which saddens me.
Edit: Re-thinking this - maybe version should be mandatory, but again not count against the tag limit, with the ability to add other versions to the question if applicable to future releases.
Feisty Fawn was 7.04.
So even if the info was partially useful you can't reply with updated information, since they've put in the artificial restriction that you can't reply to threads from say 2008.
I hope Ubuntu.com picks up on it (or sponsors it directly) so it gets a lot of Google exposure.
Disclaimer: I'm the admin of that site.
Perhaps a Lift-powered clone of StackExchange will be my next project.