sudo and su stopped working??

[NoOp]

On 03/27/2009 10:19 AM, Mike Adolf wrote:
> Don't have any idea why or how to fix it, but suddenly sudo and su both 
> give "authentication failed" error.  System/Root Terminal still works 
> and User/Groups still shows I have admin privileges. I am using 8.10 and 
> ran a security update this morning.
> 
> Mike
> 

Do you have a root account?

>From the past two days updates (Hardy) - I have proposed repo enabled:
Commit Log for Fri Mar 27 09:32:51 2009
Upgraded the following packages:
libicu38 (3.8-6) to 3.8-6ubuntu0.1
libxine1 (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-bin (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-console (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-ffmpeg (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-gnome (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-misc-plugins (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-plugins (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
libxine1-x (1.1.11.1-1ubuntu3.2) to 1.1.11.1-1ubuntu3.3
Commit Log for Thu Mar 26 08:07:22 2009
Upgraded the following packages:
linux-headers-2.6.24-24 (2.6.24-24.50) to 2.6.24-24.51
linux-headers-2.6.24-24-386 (2.6.24-24.50) to 2.6.24-24.51
linux-headers-2.6.24-24-generic (2.6.24-24.50) to 2.6.24-24.51
linux-image-2.6.24-24-generic (2.6.24-24.50) to 2.6.24-24.51
linux-libc-dev (2.6.24-24.50) to 2.6.24-24.51
tzdata (2009b-0ubuntu0.8.04) to 2009c-0ubuntu0.8.04

Now the interesting thing is on this machine where I have a root
account, I cannot open Synaptic without using the root pass word rather
than my user password. It also provides a new password popup that has an
option to save the password for the session and or add it to the
keyring. I get the same issue on gksu and sudo.

On an identical machine with no root account installed (same updates),
Synaptics works as normal.