The remote host is missing an update to mysql-5.1 announced via advisory DSA 2429-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202429-1

Several security vulnerabilities were discovered in MySQL, a database management system. The vulnerabilities are addressed by upgrading MySQL to a new upstream version, 5.1.61, which includes additional changes, such as performance improvements and corrections for data loss defects. These changes are described in the MySQL release notes at: http://dev.mysql.com/doc/refman/5.1/en/news-5-1-x.html For the stable distribution (squeeze), these problems have been fixed in version 5.1.61-0+squeeze1. For the unstable distribution (sid), these problems have been fixed in version 5.1.61-2. We recommend that you upgrade your mysql-5.1 packages.