The remote host is missing an update as announced via advisory SSA:2006-178-02.

https://secure1.securityspace.com/smysecure/catid.html?in=SSA:2006-178-02

New GnuPG packages are available for Slackware 9.0, 9.1, 10.0, 10.1, 10.2, and -current to fix security issues which could allow an attacker to crash gnupg and possibly overwrite memory which could lead to an integer overflow. More details about this issue may be found in the Common Vulnerabilities and Exposures (CVE) database: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3082