update ubuntu package problem (10.04.2 LTS)

[NoOp]

On 05/10/2011 01:18 PM, Peng Yu wrote:
> On Tue, May 10, 2011 at 1:40 PM, NoOp <glgxg at sbcglobal.net> wrote:
>> On 05/10/2011 08:44 AM, Peng Yu wrote:
>>> On Mon, May 9, 2011 at 6:27 PM, NoOp <glgxg at sbcglobal.net> wrote:
>>>> On 05/09/2011 12:12 PM, Peng Yu wrote:
>>>>> Hi,
>>>>>
>>>>> I try to update my ubuntu. But I got the following error. Could you
>>>>> please let me know what the problem is and how to fix it?
>>>>>
>>>>
>>>> Have you tried:
>>>>
>>>> $ sudo dpkg --configure -a
>>>> and
>>>> $ sudo apt-get install -f
>>>> yet?
>>>
>>> Here are the screen output.
>>>
>>> $ sudo dpkg --configure -a
>>> Setting up dbus (1.2.16-2ubuntu4.2) ...
>>> The system user `messagebus' already exists. Exiting.
>>> chown: invalid group: `root:messagebus'
>>> dpkg: error processing dbus (--configure):
>>>  subprocess installed post-installation script returned error exit status 1
>> ...
>> In the future, when you have lengthy output to post, please post at
>> http://paste.ubuntu.com and then provide a link to the pastebin: example:
>> http://paste.ubuntu.com/605802/
> 
> Sure.
> 
>> What is the result of the following:
>>
>> $ groups root
>> $ groups messagebus
>> $ cat /etc/group
>> (only the root and messagebus output please or the entire on pastebin)
> 
> See below.
> 
> $ groups root
> root : root
> $ groups messagebus
> messagebus : mlocate
> $ grep root /etc/group
> root:x:0:
> $ grep messagebus /etc/group

Interesting... I wonder why mlocate is part of the messagebus group.
Mine from my lucid test machine:

lucid at lucid-desktop:~$ groups root
root : root
lucid at lucid-desktop:~$ groups messagebus
messagebus : messagebus
lucid at lucid-desktop:~$ grep messagebus /etc/group
messagebus:x:107:
lucid at lucid-desktop:~$

And yes, I do have mlocate installed:
lucid at lucid-desktop:~$ apt-cache policy mlocate
mlocate:
  Installed: 0.22.2-1ubuntu1
  Candidate: 0.22.2-1ubuntu1
  Version table:
 *** 0.22.2-1ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status