Strange:
The Drools home page at http://www.jboss.org/drools/irc.html announces "our IRC, Internet Relay Chat, channel at irc.codehaus.org #drools". Going there redirects to http://irc.codehaus.org/dashboard.action, with no indication of IRC whatsoever. But on this page there is a link Drools which will bring you back in Time, actually to "the site for Drools 2.x". Luckily, there's a link on that page (announcing progress to Drools 3.0) that'll bring you right back to square 1, so you don't get lost in Time and Space.
-W