When installing to an NFS-mounted directory, unwrapped RPMs aren't deleted correctly, leaving orphaned files in in root/tmp, named like .nfs0003090c0000003a. (IIRC this happens with NFS if a file is unlink()ed whilst a process still has it open).
Stronghold 4.0 Cross Platform reached End of Life as of the end of December 2005. For more information or further options see: http://www.redhat.com/software/stronghold/