The remote host is missing updates announced in advisory CLSA-2005:1029.
This announcement fixes a security issue with ntpd where starting ntpd with the -u option and specifying the group by using a string not a numeric gid the daemon uses the gid of the user not the group.
Solution: The apt tool can be used to perform RPM package upgrades by running 'apt-get update' followed by 'apt-get upgrade'