The remote host is missing an update as announced via advisory SSA:2003-141-02.
New BitchX packages are available to fix security problems found by Timo Sirainen. BitchX is an IRC (Internet Relay Chat) client. Under certain circumstances, a malicious IRC server could cause BitchX to crash, or possibly to run arbitrary code as the user running BitchX. All sites running BitchX are advised to upgrade. More information on the problem can be found here: