Ralph Angenendt wrote: > Frédérique Da Luene wrote: >> Useradd newuser : ok >> passwd newuser : ok >> >> The password is not MD5, only 3DES. > > Again: Have you looked if passwd on your machine is the one from CentOS? > I would suggesting copying the binary to a known clean machine to check the md5sum to verify. If you might have been hacked, you can't check the md5 on that box.