Yesterday I found my FC4 system complaining about misssing libpcre.so.0 and libpam.so.0. The system no longer functions; I can only boot up in single user mode. 1) Any ideas how these got lost? 2) I believe I can just re-installed the RPM's that provide these to get back in business but is there a better path. 3) A long time ago someone showed me a command(s) that checked all RPMs' files against the present installation. Does anybody know of this to see if other files have gone missing? Thanks, Andrew