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For linux, be sure to use 1.6.2.1 5 or greater.
The OpenAFS download directories can function as a YUM repository if you create a yum repo config file pointing to the OpenAFS website. Samples are available via web search. Attached is a sample repo yum repository config for OpenAFS 1.6.5 running on RHEL6 and a sample yum repository config for OpenAFS 1.6.5 running on Fedora.
After installing AFS, make sure to set the cellname in your ThisCell file to cnf.cornell.edu . The location of the ThisCell file varies depending on your linux distribution. You should also consider increasing the cache size in the cacheinfo file from the default.
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