I don't quite know why rubyuforge claims Lore to have a project activity of 0% ... well, perhaps i'm just not hanging around here often enough, but at least there's a commit once in a while!
Lore already is very stable for a beta. I'm using it heavily in another project (large-scale framework) and it never let me down. There already are dozens of people that bookmarked lore's project page (or its sub-pages) on del.icio.us. Which is surprising as i didn't promote it at all so far. It also has some hundred downloads at koders and softpedia, and rubyamf has a DB adapter using, among others, Lore. All this is really nice for a project that is, so far, rather 'underground'.

Currently i'm occupied with cleaning up ToDos, implementing further unit tests, adding loads of documentation ... TPS reports is the only thing missing here ;)
After all this (about 4 weeks) i FINALLY will release it as a gem for your pleasure.
If you want to use Lore right know, read its rdoc or the tutorials at http://infranode.com/wiki/index.php/LoreTutorial
For any questions unanswered, mail me! (fuchs-at-wortundform-de)