Public bug reported:

It is not possible to change a user password in Maverick on PPC

e.g. (here I'm using <old> and <new> as examples

as user "luser"

$ passwd 
Changing password for luser.
(current) UNIX password: <old>
Enter new UNIX password: <new>
Retype new UNIX password: <new>
passwd: password updated successfully
$ su - luser
Password: <new>
su: Authentication failure

# sudo (user is permitted), login etc all fail.

Now, put the password back to what is was before, and su, sudo, login
all work again.

$ passwd
Changing password for luser.
(current) UNIX password: <new>
Enter new UNIX password: <old>
Retype new UNIX password: <old>
passwd: password updated successfully
$ su - luser
Password: <old>
############# This works ######################

Note the above is done using ssh, with the password cut and pasted from another 
session in order to preclude typos. 
It does not matter whether the new password contains any particular characters.

There is also a around "3 second"  window, using copy and paste, where
after a password change, the new password works ***once***, if it is
entered very quickly after the change. But it never works again, apart
from in passwd.

Bizarre.

-jh

Further info:

$ apt-cache policy passwd
passwd:
  Installed: 1:4.1.4.2-1ubuntu3
  Candidate: 1:4.1.4.2-1ubuntu3
  Version table:
 *** 1:4.1.4.2-1ubuntu3 0
        500 http://ports.ubuntu.com/ubuntu-ports/ maverick/main powerpc Packages
        100 /var/lib/dpkg/status
$ apt-cache policy login
login:
  Installed: 1:4.1.4.2-1ubuntu3
  Candidate: 1:4.1.4.2-1ubuntu3
  Version table:
 *** 1:4.1.4.2-1ubuntu3 0
        500 http://ports.ubuntu.com/ubuntu-ports/ maverick/main powerpc Packages
        100 /var/lib/dpkg/status
$ apt-cache policy sudo
sudo:
  Installed: 1.7.2p7-1ubuntu2
  Candidate: 1.7.2p7-1ubuntu2
  Version table:
 *** 1.7.2p7-1ubuntu2 0
        500 http://ports.ubuntu.com/ubuntu-ports/ maverick/main powerpc Packages
        100 /var/lib/dpkg/status

$ lsb_release -rd
Description:    Ubuntu maverick (development branch)
Release:        10.10

** Affects: ubuntu
     Importance: Undecided
         Status: New

-- 
Cannot change password in Maverick PPC
https://bugs.launchpad.net/bugs/642895
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