Dear Alan, From the first look I already did all what is mentioned in the 
wiki page but did not work. The wiki information is also found online in 
others locations. I will try again probably I forgot something. I am busy 
right now but will let you know after I try it again.

   Thank you, rachid.

On Sat, 25 Dec 2010, Alan Bartlett wrote:

> On 25 December 2010 17:27, Rachid Ayad <[log in to unmask]> wrote:
>
>> My yum hangs all the time and I
>> followed some advises I found online but still does not work. all internet
>> transactions in our university goes through a proxy and I added it in
>> /etc/yum.conf and it seems it accepted it and also I entered a password. The
>> proxy works from the browser but yum stil hanging.
>
> Section #11, Using Yum with a Proxy Server, of the CentOS wiki page
> [1] is the technique used by the CentOS Community. It should prove
> satisfactory for you.
>
> Alan.
>
> [1] http://wiki.centos.org/TipsAndTricks/YumAndRPM#head-ea1fc5d78f578114f4843e57627ebae9cc4fcb5a
>