chmod refuses....

[root]

IN mandrake 9.0:
address@hidden alternatives]# ll *77
lrwxrwxrwx    1 root     root           16 Jan 21 15:48 f77 -> /usr/bin/g77-3.2*
lrwxr-xr-x    1 root     root           16 Dec 20 09:27 g77 -> /usr/bin/g77-3.2*
address@hidden alternatives]# chmod g-w *77
address@hidden alternatives]# ll *77
lrwxrwxrwx    1 root     root           16 Jan 21 15:48 f77 -> /usr/bin/g77-3.2*
lrwxr-xr-x    1 root     root           16 Dec 20 09:27 g77 -> /usr/bin/g77-3.2*
address@hidden alternatives]# mail address@hidden
Subject: chmod won't

address@hidden alternatives]# chmod 755 f77
address@hidden alternatives]# ll *77
lrwxrwxrwx    1 root     root           16 Jan 21 15:48 f77 -> /usr/bin/g77-3.2*
lrwxr-xr-x    1 root     root           16 Dec 20 09:27 g77 -> /usr/bin/g77-3.2*
address@hidden alternatives]# chmod g-w f77
address@hidden alternatives]# ll *77
lrwxrwxrwx    1 root     root           16 Jan 21 15:48 f77 -> /usr/bin/g77-3.2*
lrwxr-xr-x    1 root     root           16 Dec 20 09:27 g77 -> /usr/bin/g77-3.2*
address@hidden alternatives]# chmod o-w f77
address@hidden alternatives]# ll *77
lrwxrwxrwx    1 root     root           16 Jan 21 15:48 f77 -> /usr/bin/g77-3.2*
lrwxr-xr-x    1 root     root           16 Dec 20 09:27 g77 -> /usr/bin/g77-3.2*
address@hidden alternatives]# ll -d .
drwxr-xr-x    2 root     root         4096 Jan 21 15:48 ./

best to reply to address@hidden
        Thanks, MMC