I use Fedora 'raw-hide' on a daily basis, and every so often, updates fail due to broken dependencies. This has been a nuisance for quite a while, and I'd many times work around it by uninstalling packages that were causing yum to fail the update. But, this is no longer necessary, thanks to a very cool yum plugin.

# yum install yum-skip-broken
# yum update --ignore-broken

Pretty neat!