Help needed urgently please: Couldn't solve "400 Bad Request" during sytem update

[arshad]

On Sat, 2009-12-19 at 11:41 -0800, NoOp wrote:
> On 12/19/2009 11:11 AM, arshad wrote:
> ...
> > yeah, i changed it several times and still the same :(
> 
> Also, can you check System|Preferences|Network Proxy and ensure that
> 'Direct internet connection' is checked on the 'Proxy Configuration'
> tab, and that the 'Ignored Hosts' tab is only showing:
> localhost
> 127.0.0/8
> *.local
> 
> 
> 
hi friend.
thank you for your continues help.
i appreciate this greately.

the network proxy settings is ok as you have given.
it seems i can install things from apt-get but only cannot update. as i
might have mentioned before my friend also having the same prob. 
here is the output for update with only the main enabled:

$ sudo apt-get update
Ign http://archive.ubuntu.com jaunty Release.gpg
Ign http://archive.ubuntu.com jaunty/main Translation-en_US
Ign http://archive.ubuntu.com jaunty-updates Release.gpg
Ign http://archive.ubuntu.com jaunty-updates/main Translation-en_US
Ign http://archive.ubuntu.com jaunty-security Release.gpg
Ign http://archive.ubuntu.com jaunty-security/main Translation-en_US
Ign http://archive.ubuntu.com jaunty Release     
Ign http://archive.ubuntu.com jaunty-updates Release
Ign http://archive.ubuntu.com jaunty-security Release
Ign http://archive.ubuntu.com jaunty/main Packages
Ign http://archive.ubuntu.com jaunty-updates/main Packages
Ign http://archive.ubuntu.com jaunty-security/main Packages
Ign http://archive.ubuntu.com jaunty/main Packages
Ign http://archive.ubuntu.com jaunty-updates/main Packages
Ign http://archive.ubuntu.com jaunty-security/main Packages
Err http://archive.ubuntu.com jaunty/main Packages
  400 Bad Request
Err http://archive.ubuntu.com jaunty-updates/main Packages
  400 Bad Request
Err http://archive.ubuntu.com jaunty-security/main Packages
  400 Bad Request
W: Failed to fetch
http://archive.ubuntu.com/ubuntu/dists/jaunty/main/binary-i386/Packages
400 Bad Request

W: Failed to fetch
http://archive.ubuntu.com/ubuntu/dists/jaunty-updates/main/binary-i386/Packages  400 Bad Request

W: Failed to fetch
http://archive.ubuntu.com/ubuntu/dists/jaunty-security/main/binary-i386/Packages  400 Bad Request

E: Some index files failed to download, they have been ignored, or old
ones used instead.