I just wanted to clear the caches by yum clean all and noticed that yum is pulling data from the internet. Since cleaning is a local operation, I believe that it shouldn't really need to do this. yum-3.4.3-7.fc16.noarch # yum --enablerepo=\* clean all Loaded plugins: changelog, fastestmirror, security Loading mirror speeds from cached hostfile fedora-debuginfo/metalink | 17 kB 00:00 fedora-source/metalink | 20 kB 00:00 updates-debuginfo/metalink | 11 kB 00:00 updates-source/metalink | 12 kB 00:00 updates-testing/metalink | 12 kB 00:00 updates-testing-debuginfo/metalink | 11 kB 00:00 updates-testing-source/metalink | 12 kB 00:00 * fedora: ftp.upjs.sk * fedora-debuginfo: mirror.cogentco.com * fedora-source: ftp.us.unixeria.com ...
I believe this has been fixed by commit 2853dc82e1c14ce15451a3f184507483fe29e85a, see BUG 773512.
*** This bug has been marked as a duplicate of bug 773512 ***