As Syzop over at UnRealCD put it..."This is very embarassing".  It appears that the popular UnRealCD IRC Server has been compromised with a Trojan since November 2009.  If you are the keeper of one of the many UnRealCD instances I suggest you upgrade ASAP, and it probably wouldn't be a bad idea to take a long hard look at your server for other indications of compromise.

More information over at the UnRealCD forums.

Thanks to reader Colin for the heads-up!

-- Rick Wanner - rwanner at isc dot sans dot org - http://rwanner.blogspot.com/