Xchat Aqua Exploit help

Ok so today I was on my computer and I noticed on my Xchat Aqua IRC client I kept disconnecting on one of the servers I was on. I checked my internet thinking it was my ISP dropping and it was running fine. I checked my computer and it was ok because I had AIM msn and all that running. So i get on my other computer and use a browser based IRC client to see if it does it there and when my xchat disconnected I didnt disconnect on the browser. I then noticed.. there was a $%&%$# who must have found an exploit threw DCC for xchat because he was typeing things like "DCC send tralala 0 0 0" and I would disconnect.

So my question is did anyone know about this or know how to fix it? because its really annoying and I cant find anything to stop him.

Thanks.