ubuntu hangs while shutting down

[Tapas Mishra]

On Tue, Dec 18, 2012 at 9:20 PM, Tapas Mishra <mightydreams at gmail.com> wrote:
> On Mon, Dec 17, 2012 at 3:06 AM, Avi Greenbury <lists at avi.co> wrote:
>> Tapas Mishra wrote:
>>> I am using Ubuntu 11.10 and when I shut it down sudo reboot it hangs
>>> while shutting down.
>>> I observed for more than 30 minutes and it could not still shut down.
>>> What should I check?
>>
>> Do you know how far it gets through the shutdown? Are there any
>> messages on the screen at the time?
>>
>> Generally, /var/log/syslog, /var/log/messages and /var/log/dmesg are
>> not unreasonable places ot start looking.
>
> ok I checked I know there should be a file /var/log/messages but this
> file does not exist on my
> system  don't know what might be broken any hint here will be helpful....
>
> while I wanted to pastebin the file /var/log/syslog I got a message
> permission denied
> cat syslog > pastebinit
> bash: pastebinit: Permission denied
>
> any how pastebinit -f syslog worked and here is the output of syslog
> http://paste.ubuntu.com/1447778/
> and dmesg is here
> http://paste.ubuntu.com/1447782/
> I am not sure as to what might be wrong in above two logs
>
an addition to above
/var/log/syslog.1
http://paste.ubuntu.com/1447789/