Hi, It seems that the new update system does not consider the proxy option set yum.conf. After installing centos-yumconf-4-4.4.noarch.rpm together with the new yum packages, I was no longer able to use yum. In my case HTTP access is allowed only through a proxy. The proxy URL is configured in yum.conf. If I set the environment variable http_proxy from the shell I start yum, everything works. If I comment out the mirrorlist lines in CentOS-Base.repo yum is working fine without setting http_proxy environment variable (using the proxy defined in yum.conf). Anyone else seeing this or am I doing something wrong? Regards, Radu