Seems to be a problem with the repodata:
Fetching packages...
->
http://download.fedora.redhat.com/.../python-setuptools-0.6c3-1.fc6.noarc...
python-setuptools-0.6c3-1.fc6.. [ 92%]
error: Failed to download packages:
error:
http://download.fedora.redhat.com/pub/fedora/linux/extras/6/x86_64/python...:
Not Found