I am having problems with sudo. I want to get updates and all I get in the terminal window is 'unable to resolve host' followed by 'permission denied' I have tried to figure ways out of this but am stuck. all this came about by upgrading to Hardy. everything worked fine in Gutsy so I feel sure that if I could get the upgrades this may solve the many problems I am now having with Kubuntu. I really would appreciate some help on this.

Hmm...

Please paste your terminal session here; it would help a lot to see which commands you're running, and where the error happens.

Can you connect to the internet without problems? Look in your /etc/apt/sources.list; there should be one or more hostnames (http://ftp.this-is-what-I-am-talking....com/not-this/ or-this). Try running the command "host ftp.this-is-what-I-am-talking-about.com" (replace the name with your actual name). What is the result? What is the name?

If the hostname is ftp.ubuntu.com, then host should spit out three lines, containing "ftp.ubuntu.com A ip-address", where ip-address is one of 91.189.88.31, 91.189.88.45, 91.189.88.46. Is this what you see?

How are you trying to get updates? "sudo apt-get update" or "sudo aptitude update" or something else?

Welcome to LQ

> Thanks for your reply.I have pasted below the outcome of the terminal window. I should point out that I can get the internet through my ethernet connection to another computer running windows xp. So I am getting firefox and emails (like this). The problem is also I cannot get 'administrator mode' to stay on when I click the button. I thought I might be able to change my netwok settings which are greyed out but say: 127.0.0.1 localhost and 127.0.1.1 ubuntu. Apart from sudo, su, kdesu doesn't help either on the command line. This is a new computer with kubuntu and mythbuntu installed and as yet I have not spoken to the vendor who are very reputable but in England (I am in Greece) as I want to try and work things out for myself. I have tried downloading hardy but it goes so far and then stops with a message 'not able to read scource code.' I see also in the terminal window that there is nothing after user@: a few days ago it had user@(none):
> >
Terminal window on various things I tried
user@:~$ sudo apt-get update
sudo: unable to resolve host
user@:~$ /etc/apt/scources
bash: /etc/apt/scources: No such file or directory
user@:~$ /etc/apt/scources.
bash: /etc/apt/scources.: No such file or directory
user@:~$ /etc/bin
bash: /etc/bin: No such file or directory
user@:~$ usr/bin
bash: usr/bin: No such file or directory
user@:~$ ksystraycmd adept_manager
kapture::PkgSystem::PkgSystem()
adduser
debconf
sysklogd
snort-mysql
oinkmaster
adduser
debconf
sysklogd
snort-mysql
oinkmaster
kdecore (KProcess): WARNING: _atta

This in the shell konsole:
user@:~$ kdesu apt-get update
xauth: (argv):1: bad display name ":0.0" in "list" command
kdesu (kdelibs): WARNING: No X authentication info set for display :0.0
/usr/bin/xauth: (argv):1: bad display name ":0.0" in "add" command
sudo: unable to resolve host

user@:~$

Have you checked your /etc/resolv.conf? It is supposed to contain the addresses of your nameserver(s). Have you checked your router or whatever it is you are using to connect to your local network?