I note that the new /etc/group has :: for each group instead of x or * -- this allows people to do newgrp to log into any group, no? Hmm, well, it doesn't seem to, did the semantics of /etc/group change at soem point? The manual page and the behaviour of newgrp and sg don't match.
If nothing else, it may be a problem if you're trying to use Linux as an NIS (Yellow Pages) server to machines that treat empty group passwords that way, especially as passwd and group are group writeable. I always get a .rpmnew file for group and passwd, by the way -- but this difference may be why. # rpm -qf /etc/group setup-2.2.0-33mdk root::0: bin::1: daemon::2: sys::3: adm::4: tty::5: disk::6: lp::7: mem::8: kmem::9: wheel::10: etc
