[Ubuntu-BD] invalid reply header (repo problem)

[Shahriar Tariq]

On Monday 06 July 2009 22:00:38 Ashiqur Rahman Angel wrote:
> System→Administration→Software source
> Into Ubuntu software tab select Download from: Main server.

Already main server (check my sources.lst file)

> Now, open a Terminal and type:
>
> sudo apt-get clean
> sudo apt-get update
> sudo apt-get upgrade

tried them before... does not work....
as I mentioned before I'm getting invalid header error while trying to 
update the source list or upgrade the system

thanks anyway for your suggestions :)