We actually run UnrealIRCD at usachat.net.
I have scanned my system with 3 different antivirus scanners and already have the latest Norton Antivirus Corporate Edition v8.1 with dat files dated 6/26/03 rev. 18 and I have no virus or trojan according to any of them. It totally blew me away when I saw that and got kicked from the channel with (Stop repeating!) from the actual owner of the server's script. LoL - I'll find out soon enough how those kids did it. Eventually, I'm sure I'll find a raw code that does it. I know it used to be able to be done on EFNet back in the day. Maybe someone just found that exploit on UnrealIRCD. We'll see..