Mandriva Linux Security Update Advisory – When starting xntpd 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.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/39900/MDKSA-2005-156.txt
Source: https://packetstormsecurity.com/files/39900/Mandriva-Linux-Security-Advisory-2005.156.html