Apparantly 3 Time Level guilds got together to fight kerafrym on RZ server. Thier tactic, basically was one of the biggest zerg rushes around. They were actually able to wear him down. 160ish people and 3 hours later sleeper is down to 25% health and then the zone repops. GM's say they have no idea what happened.
http://www.ascendingdawn.com/cgi-bin/index.pl was tracking the action, right now the news page is down, guess too many hits, but it looks like this story will be getting a lot of attention.