The remote host is vulnerable to a buffer overflow.
The remote host seems to be running Gaim, a popular open-source, multi-protocol instant messenger. It is reported that this version of Gaim is vulnerable to several remote flaws. An attacker exploiting these flaws would be able to create a Denial of Service (DoS) condition or possibly overflow system memory and execute arbitrary code.
Update to version 1.3.2 or higher.