Description of problem: Fedora 8 comes with the following packages: netpbm-10.35-17.fc8 netpbm-devel-10.35-17.fc8 netpbm-progs-10.35-17.fc8 but if one tries to update a current FC6 installation then packages present are netpbm-10.35.32-1.fc6 netpbm-devel-10.35.32-1.fc6 netpbm-progs-10.35.32-1.fc6 and the care coming up as "newer" (as an epoch obviously was not bumped up). To replace them with F8 packages one has to use 'rpm --oldpackage -Uvh netpbm*f8*.rpm'. One is left with "orphans" does not matter if an update was run with a help of anaconda or with 'yum update'.
Oh, I believe that updating from F7 gets into the same predicament.
Yes, the update to f8 was not yet pushed. It will be pushed shortly. Thanks for noticing.