Yum Error

Just did a fresh install of F18 via netinstall and get the following message.

[henry@hewjr ~]$ su
Password:
[root@hewjr henry]# yum update
Loaded plugins: langpacks, presto, refresh-packagekit
Error: Cannot retrieve metalink for repository: fedora/18/x86_64. Please verify its path and try again
[root@hewjr henry]#

Seen this issue with previous versions, but not with f18

Henry