fop_server2 extracts ~11MiB of files to /tmp/par-root. In accordance with the FHS's suggestion that /tmp be used only for ephemeral files, on many systems /tmp is a small RAM disk. Perhaps you might amend fop_server2 to use /var/tmp instead. If not, it would be useful to mention in your documentation that it's possible to change the location by exporting an environment variable: export PAR_GLOBAL_TEMP=/var/tmp/par-root

Currently all available versions of fop_server2 are dynamically linked against /usr/lib[64]/libcrypto.so.0.9.8.
It would be nice to have builds available linked against OpenSSL 1.0.0 too. A symlink works for the purposes of 'fop_server2 --test', but I'm worried about run-time problems due to possible API changes.

Thanks for your attention.