Seem to be having a problem authenticating to an ISA 2004 ISA server running NTLM authentication only... (what else is new) ------------------------ [root@linux ~]# yum update Setting up Update Process Setting up Repos http://download.fedora.redhat.com/pub/fedora/linux/core/3/i386/os/repodata/repomd.xml: [Errno 4] IOError: <urlopen error nonnumeric port: '8080?'> Trying other mirror. Cannot open/read repomd.xml file for repository: base failure: repodata/repomd.xml from base: [Errno 256] No more mirrors to try. ----------------------- Running yum-2.2.1-1 on a fedora core 3 box... /etc/yum.conf [main] proxy=http://172.17.4.16:8080 proxy_username=username proxy_password=password Any help would be most appreciative...