A weekly run of makewhatis from the root crontab (/etc/cron.weekly/makewhatis.cron) reports a missing file when it encounters /usr/man/man1/rec.1. This can be traced to an invalid symlink in the package sox-12.16-3.i386.rpm on the 6.1 distribution CDROM. The symlink is pointing at the play.1 file in the sox buildroot tree, not to the one in the final installation location. This error, as it comes from a cron script, will cause regular weekly mail to root.
Fixed in RawHide distribution (same version, package release 4): http://rpmfind.net/linux/RPM/rawhide/1.0/i386/RedHat/RPMS/sox-12.16-4.i386.html
*** This bug has been marked as a duplicate of 5669 ***