It's my company's IPMASQ box. I noticed I couldn't login.
I also could not log in from the console the next day (as any user or
root).
After verifying all my packages, I noticed that /sbin/telnetd.in was
bad as well as /bin/login.
rpm -Uhv --force util-linux*.rpm did not work (failed installling
/bin/login).
I can not (and still can not) remove, clear, link, mv or chmod
/bin/login.
In the meanwhile, I have grabbed the real /bin/login, renamed it to
/bin/Login and edited the mingetty/telnetd.in/rlogind.in files to use
/bin/Login.
WHY CAN'T I REPLACE /bin/login???