Yum in Fedora 11 could use some work on error reporting. While I have no doubt the following message was technically true – it wasn’t very helpful in diagnosing the problem. This failure was caused by the loss of Internet connectivity.
Errors were encountered while downloading packages. boa-0.94.14-0.12.rc21.fc11.i586: Caching enabled but no local cache of /var/cache/yum/fedora/packages/boa-0.94.14-0.12.rc21.fc11.i586.rpm from fedora